Portal:Ukraine
The Ukraine Portal - Портал України
Ukraine Україна (Ukrainian) | |
|---|---|
| ISO 3166 code | UA |
Ukraine is a country in Eastern Europe. It is the second-largest country in Europe after Russia, which borders it to the east and northeast. Ukraine also borders Belarus to the north; Poland and Slovakia to the west; Hungary, Romania and Moldova to the southwest; and the Black Sea and the Sea of Azov to the south and southeast. Kyiv is the nation's capital and largest city, followed by Kharkiv, Dnipro, and Odesa. Ukraine's official language is Ukrainian.
Humans have inhabited Ukraine since 32,000 BC. During the Middle Ages, it was the site of early Slavic expansion and later became a key centre of East Slavic culture under the state of Kievan Rus', which emerged in the 9th century. Kievan Rus' became the largest and most powerful realm in Europe in the 10th and 11th centuries, but gradually disintegrated into rival regional powers before being destroyed by the Mongols in the 13th century. For the next 600 years the area was contested, divided, and ruled by a variety of external powers including the Grand Duchy of Lithuania, the Kingdom of Poland, the Polish–Lithuanian Commonwealth, the Austrian Empire, the Ottoman Empire, and the Tsardom of Russia.
The Cossack Hetmanate emerged in central Ukraine in the 17th century but was partitioned between Russia and Poland before being absorbed by the Russian Empire in the late 19th century. Ukrainian nationalism developed and, following the Russian Revolution in 1917, the short-lived Ukrainian People's Republic was formed. The Bolsheviks consolidated control over much of the former empire and established the Ukrainian Soviet Socialist Republic, which became a constituent republic of the Soviet Union in 1922. In the early 1930s, millions of Ukrainians died in the Holodomor, a human-made famine. During World War II, Ukraine was occupied by Germany and endured major battles and atrocities, resulting in 7 million civilians killed, including most Ukrainian Jews.
Ukraine gained independence in 1991 as the Soviet Union dissolved and declared itself neutral. A new constitution was adopted in 1996 as the country transitioned to a free market liberal democracy amid endemic corruption and a legacy of state control. The Orange Revolution of 2004–2005 ushered electoral and constitutional reforms. Resurgent political crises prompted a series of mass demonstrations in 2014 known as the Euromaidan, leading to a revolution, at the end of which Russia unilaterally occupied and annexed Ukraine's Crimean Peninsula, and pro-Russian unrest culminated in a war in Donbas with Russian-backed separatists and Russia. Russia launched a full-scale invasion of Ukraine in 2022. (Full article...)
In the news
- 8 April 2025 – Russo-Ukrainian War
- 2025 Belgorod Oblast incursion
- Ukrainian president Volodymyr Zelenskyy confirms the presence of Ukrainian troops active in Russia's Belgorod Oblast. (BBC News)
- 8 April 2025 – China and the Russian invasion of Ukraine, China–Russia relations, China–Ukraine relations
- Ukrainian President Volodymyr Zelenskyy reports that Ukrainian armed forces captured two Chinese citizens fighting for the Russian military in Donetsk. (BBC)
- 6 April 2025 – Russian invasion of Ukraine
- 2025 Sumy Oblast incursion
- Russian troops reportedly capture the village of Basivka in Sumy Oblast, Ukraine. (Reuters)
- Kyiv strikes
- A Russian airstrike in Darnytskyi District, Kyiv, Ukraine, kills one person and injures three others. (CTV News)
- Kryvyi Rih strikes
- The death toll from Friday's missile strike on Kryvyi Rih, Ukraine, rises to 20 deaths, including several children, and 75 injuries. (CTV News)
- 5 April 2025 – Russian invasion of Ukraine
- Kryvyi Rih strikes
Recognized content - 
Entries here consist of Good and Featured articles, which meet a core set of high editorial standards.
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![Image 1 Stanisław Marcin Ulam (Polish: [sta'ɲiswaf 'mart͡ɕin 'ulam]; 13 April 1909 – 13 May 1984) was a Polish and American mathematician, nuclear physicist and computer scientist. He participated in the Manhattan Project, originated the Teller–Ulam design of thermonuclear weapons, discovered the concept of the cellular automaton, invented the Monte Carlo method of computation, and suggested nuclear pulse propulsion. In pure and applied mathematics, he proved a number of theorems and proposed several conjectures. Born into a wealthy Polish Jewish family in Lemberg, Austria-Hungary; Ulam studied mathematics at the Lwów Polytechnic Institute, where he earned his PhD in 1933 under the supervision of Kazimierz Kuratowski and Włodzimierz Stożek. In 1935, John von Neumann, whom Ulam had met in Warsaw, invited him to come to the Institute for Advanced Study in Princeton, New Jersey, for a few months. From 1936 to 1939, he spent summers in Poland and academic years at Harvard University in Cambridge, Massachusetts, where he worked to establish important results regarding ergodic theory. On 20 August 1939, he sailed for the United States for the last time with his 17-year-old brother Adam Ulam. He became an assistant professor at the University of Wisconsin–Madison in 1940, and a United States citizen in 1941. (Full article...)](//upload.wikimedia.org/wikipedia/en/d/d2/Blank.png)
Stanisław Marcin Ulam (Polish: [sta'ɲiswaf 'mart͡ɕin 'ulam]; 13 April 1909 – 13 May 1984) was a Polish and American mathematician, nuclear physicist and computer scientist. He participated in the Manhattan Project, originated the Teller–Ulam design of thermonuclear weapons, discovered the concept of the cellular automaton, invented the Monte Carlo method of computation, and suggested nuclear pulse propulsion. In pure and applied mathematics, he proved a number of theorems and proposed several conjectures.
Born into a wealthy Polish Jewish family in Lemberg, Austria-Hungary; Ulam studied mathematics at the Lwów Polytechnic Institute, where he earned his PhD in 1933 under the supervision of Kazimierz Kuratowski and Włodzimierz Stożek. In 1935, John von Neumann, whom Ulam had met in Warsaw, invited him to come to the Institute for Advanced Study in Princeton, New Jersey, for a few months. From 1936 to 1939, he spent summers in Poland and academic years at Harvard University in Cambridge, Massachusetts, where he worked to establish important results regarding ergodic theory. On 20 August 1939, he sailed for the United States for the last time with his 17-year-old brother Adam Ulam. He became an assistant professor at the University of Wisconsin–Madison in 1940, and a United States citizen in 1941. (Full article...) -
Nikolai Aleksandrovich Tikhonov (Russian: Николай Александрович Тихонов; Ukrainian: Микола Олександрович Тихонов; 14 May [O.S. 1 May] 1905 – 1 June 1997) was a Soviet Russian-Ukrainian statesman during the Cold War. He served as Chairman of the Council of Ministers from 1980 to 1985, and as a First Deputy Chairman of the Council of Ministers, literally First Vice Premier, from 1976 to 1980. Tikhonov was responsible for the cultural and economic administration of the Soviet Union during the late era of stagnation. He was replaced as Chairman of the Council of Ministers in 1985 by Nikolai Ryzhkov. In the same year, he lost his seat in the Politburo; however, he retained his seat in the Central Committee until 1989.
He was born in the city of Kharkiv in 1905 to a Russian-Ukrainian working-class family; he graduated in the 1920s and started working in the 1930s. Tikhonov began his political career in local industry, and worked his way up the hierarchy of Soviet industrial ministries. He was appointed deputy chairman of the Gosplan in 1963. After Alexei Kosygin's resignation Tikhonov was voted into office as Chairman of the Council of Ministers. In this position, he refrained from taking effective measures to reform the Soviet economy, a need which was strongly evidenced during the early–mid-1980s. He retired from active politics in 1989 as a pensioner. Tikhonov died on 1 June 1997. (Full article...) -
Mykola Leontovych
Mykola Dmytrovych Leontovych (Ukrainian: Микола Дмитрович Леонтович, pronounced [mɪˈkɔlɐ dmɪˈtrɔʋet͡ʃ ɫeɔnˈtɔʋet͡ʃ] ⓘ; 13 December [O.S. 1 December] 1877 – 23 January 1921) was a Ukrainian composer, conductor, ethnomusicologist, and teacher. His music was inspired by the Ukrainian composer Mykola Lysenko and the Ukrainian National Music School. Leontovych specialised in a cappella choral music, ranging from original compositions to church music to elaborate arrangements of folk music.
Leontovych was born and raised in Monastyrok in the Podolia province of the Russian Empire (now in Vinnytsia Oblast, Western Ukraine). He was educated as a priest in the Kamianets-Podilskyi Theological Seminary. With the independence of the Ukrainian State in the 1917 revolution, he moved to Kyiv, where he worked at the Kyiv Conservatory and the Mykola Lysenko Institute of Music and Drama. He composed "Shchedryk" in 1914 (premiered in 1916), now known to the English-speaking world as "Carol of the Bells". He was murdered by a Soviet agent in 1921 and is known as a martyr in the Eastern Orthodox Ukrainian Church, where he is also remembered for his liturgy, the first composed in the vernacular, specifically in the modern Ukrainian language. (Full article...) -
Nestor Ivanovych Makhno (Ukrainian: Нестор Іванович Махно, pronounced [ˈnɛstor iˈʋɑnowɪt͡ʃ mɐxˈnɔ]; 7 November 1888 – 25 July 1934), also known as Bat'ko Makhno (батько Махно, lit. 'Father Makhno'), was a Ukrainian anarchist revolutionary and the commander of the Revolutionary Insurgent Army of Ukraine during the Ukrainian War of Independence. He established the Makhnovshchina (loosely translated as "Makhno movement"), a mass movement by the Ukrainian peasantry to establish anarchist communism in the country between 1918 and 1921. Initially centered around Makhno's home province of Katerynoslav and hometown of Huliaipole, it came to exert a strong influence over large areas of southern Ukraine, specifically in what is now the Zaporizhzhia Oblast of Ukraine.
Raised by a peasant family and coming of age amid the fervor around the 1905 Revolution, Makhno participated in a local anarchist group and spent seven years imprisoned for his involvement. With his release during the 1917 Revolution, Makhno became a local revolutionary leader in his hometown and oversaw the expropriation and redistribution of large estates to the peasantry. In the Ukrainian Civil War, Makhno sided with the Soviet Russian Bolsheviks against the Ukrainian nationalists and White movement, but his alliances with the Bolsheviks did not last. He rallied Bolshevik support to lead an insurgency, defeating the Central Powers' occupation forces at the Battle of Dibrivka and establishing the Makhnovshchina. Makhno's troops briefly integrated with the Bolshevik Red Army in the 1919 Soviet invasion of Ukraine, but split over differences on the movement's autonomy. Makhno rebuilt his army from the remains of Nykyfor Hryhoriv's forces in western Ukraine, routed the White Army at the Battle of Perehonivka, and captured most of southern and eastern Ukraine, where they again attempted to establish anarchist communism. (Full article...) -
The Battle of Kostiuchnówka was a World War I battle that took place July 4–7, 1916, near the village of Kostiuchnówka (Kostyukhnivka) and the Styr River in the Volhynia region of modern Ukraine, then part of the Russian Empire. It was a major clash between the Russian Army and the Polish Legions (part of the Austro-Hungarian Army) during the opening phase of the Brusilov Offensive.
Polish forces, numbering 5,500–7,300, faced Russian forces numbering over half of the 46th Corps of 26,000. The Polish forces were eventually forced to retreat, but delayed the Russians long enough for the other Austro-Hungarian units in the area to retreat in an organized manner. Polish casualties were approximately 2,000 fatalities and wounded. The battle is considered one of the largest and most vicious of those involving the Polish Legions in World War I. (Full article...) -
Kateryna Mykolayivna Skarzhynska née von Reiser (Ukrainian: Катерина Миколаївна Скаржинська, 7 February 1852 O.S./19 February 1852 (N.S.) – 1932) was a Ukrainian noblewoman, philanthropist, and collector of folklore. She established the first private museum in Ukraine to house her collection of artifacts and was particularly known for her collection of pysanky, Easter eggs decorated with Ukrainian folk art. Born in Lubny to the von Reiser family, which had a long history of military service to the Russian Tsars, she was educated at home, studying in her parents' library and with select tutors. After her father died in 1859, together with her mother, brother, and maternal grandmother she moved to the Lodygyn/Lodigine family estates in the Tver province of the Russian Empire, near Moscow. There at the age of 14, von Reiser established a school for the former serfs of the estate and a public hospital.
In 1869, von Reiser became acquainted with Nikolai Georgievich Skarzhynsky, a Ukrainian nobleman and soldier. Through his circle of friends, she decided to continue her education and passed her gymnasium studies, entering the Bestuzhev Courses. They married in 1874 and later would have five children together. Five years later, he was transferred from St. Petersburg back to Ukraine. Though she did not finish her studies, Skarzhynska had developed an interest in culture and moving back to her father's estate, Kruglik, inspired her to begin collecting folk art and other artifacts. Consulting with ethnographers, archaeologists and historians, she financed archaeological excavations and amassed a large collection of items. Failing to interest local authorities in establishing a museum to house them, she created the first private museum in Ukraine in 1880. Hiring professional curators, Skarzhynska assisted in developing the collection until 1905. One of the curators, Sergiy Kulzhynskiy, would become her partner, father of her youngest child, and her companion and caretaker in her old age. In 1906, she transferred her materials to the Museum of Natural History of Poltava Provincial Zemstvo. (Full article...) -
The deportation of the Crimean Tatars (Crimean Tatar: Qırımtatar halqınıñ sürgünligi, Cyrillic: Къырымтатар халкъынынъ сюргюнлиги) or the Sürgünlik ('exile') was the ethnic cleansing and the cultural genocide of at least 191,044 Crimean Tatars that was carried out by Soviet Union authorities from 18 to 20 May 1944, supervised by Lavrentiy Beria, chief of Soviet state security and the secret police, and ordered by the Soviet leader Joseph Stalin. Within those three days, the NKVD used cattle trains to deport the Crimean Tatars, even Soviet Communist Party members and Red Army members, from Crimea to the Uzbek SSR, several thousand kilometres away. They were one of several ethnicities that were subjected to Stalin's policy of population transfer in the Soviet Union.
Officially, the Soviet government presented the deportation as a policy of collective punishment, based on its claim that some Crimean Tatars collaborated with Nazi Germany in World War II, despite the fact that the 20,000 who collaborated with the Axis powers were half the 40,000 who served in the Soviet Red Army. Several modern scholars believe rather that the government deported them as a part of its plan to gain access to the Dardanelles and acquire territory in Turkey, where the Turkic ethnic kin of the Tatars lived, or remove minorities from the Soviet Union's border regions. By the end of the deportation, not a single Crimean Tatar lived in Crimea, and 80,000 houses and 360,000 acres of land were left abandoned. Nearly 8,000 Crimean Tatars died during the deportation, and tens of thousands subsequently perished due to the harsh living conditions in which they were forced to live during their exile. After the deportation, the Soviet government launched an intense detatarization campaign in an attempt to erase the remaining traces of Crimean Tatar existence. (Full article...) -
The Dvorichna settlement hromada (Ukrainian: Дворічанська селищна громада, romanized: Dvorichanska selyshchna hromada, Russian: Дворичанская поселковая община) is a hromada in the Kupiansk Raion, Kharkiv Oblast, Ukraine. The hromada was created on 12 June 2020, and is centrally administered by the urban-type settlement of Dvorichna, being the local government for 55 settlements. The pre-war population of the hromada was small, and the economy was largely agriculture-based with little industry. As of 2024[update], the hromada remains about half occupied by Russian forces as a result of the Russian invasion of Ukraine, and has been severely depopulated because of a mandatory evacuation that has been issued for all civilians in recaptured areas. (Full article...) -
The Ukrainian Figure Skating Championships are held annually to crown the national champions of Ukraine. Skaters compete in men's singles, women's singles, pair skating, and ice dance at the senior, junior, and novice levels, although not every discipline is held every year due to a lack of participants. The event is organized by the Ukrainian Figure Skating Federation, the sport's national governing body.
In 2014, the Ukrainian Figure Skating Federation hosted an international event – the 2014 Ukrainian Open – which also served as Ukraine's national championships for that year. (Full article...) -
Nikita Sergeyevich Khrushchev (15 April [O.S. 3 April] 1894 – 11 September 1971) was the First Secretary of the Communist Party of the Soviet Union from 1953 to 1964 and the Chairman of the Council of Ministers (premier) from 1958 to 1964. During his rule, he stunned the communist world with his denunciation of his predecessor Joseph Stalin and embarked on a policy of de-Stalinization with his key ally Anastas Mikoyan. Khrushchev sponsored the early Soviet space program and enacted reforms in domestic policy. After some false starts, and a narrowly avoided nuclear war over Cuba, he conducted successful negotiations with the United States to reduce Cold War tensions. In 1964, the Kremlin circle stripped him of power, replacing him with Leonid Brezhnev as the First Secretary and Alexei Kosygin as the Premier.
Khrushchev was born in 1894 in a village in western Russia. He was employed as a metal worker during his youth, and he was a political commissar during the Russian Civil War. Under the sponsorship of Lazar Kaganovich, Khrushchev worked his way up the Soviet hierarchy. He originally supported Stalin's purges and approved thousands of arrests. In 1938, Stalin sent him to govern the Ukrainian SSR, and he continued the purges there. During the Great Patriotic War, Khrushchev was again a commissar, serving as an intermediary between Stalin and his generals. Khrushchev was present at the defense of Stalingrad, a fact he took great pride in. After the war, he returned to Ukraine before being recalled to Moscow as one of Stalin's close advisers. (Full article...) -
Andrew II (Hungarian: II. András, Croatian: Andrija II., Slovak: Ondrej II., Ukrainian: Андрій II; c. 1177 – 21 September 1235), also known as Andrew of Jerusalem, was King of Hungary and Croatia between 1205 and 1235. He ruled the Principality of Halych from 1188 until 1189/1190, and again between 1208/1209 and 1210. He was the younger son of Béla III of Hungary, who entrusted him with the administration of the newly conquered Principality of Halych in 1188. Andrew's rule was unpopular, and the boyars (or noblemen) expelled him. Béla III willed property and money to Andrew, obliging him to lead a crusade to the Holy Land. Instead, Andrew forced his elder brother, King Emeric of Hungary, to cede Croatia and Dalmatia as an appanage to him in 1197. The following year, Andrew occupied Hum.
Despite the fact that Andrew did not stop conspiring against Emeric, the dying king made Andrew guardian of his son, Ladislaus III, in 1204. After the premature death of Ladislaus, Andrew ascended the throne in 1205. According to historian László Kontler, "[i]t was amidst the socio-political turmoil during [Andrew's] reign that the relations, arrangements, institutional framework and social categories that arose under Stephen I, started to disintegrate in the higher echelons of society" in Hungary. Andrew introduced a new grants policy, the so-called "new institutions", giving away money and royal estates to his partisans despite the loss of royal revenues. He was the first Hungarian monarch to adopt the title of "King of Halych and Lodomeria". He waged at least a dozen wars to seize the two Rus' principalities, but was repelled by the local boyars and neighboring princes. He participated in the Fifth Crusade to the Holy Land in 1217–1218, but the crusade was a failure. (Full article...) -
Sergei Sergeyevich Prokofiev (27 April [O.S. 15 April] 1891 – 5 March 1953) was a Russian composer, pianist, and conductor who later worked in the Soviet Union. As the creator of acknowledged masterpieces across numerous music genres, he is regarded as one of the major composers of the 20th century. His works include such widely heard pieces as the March from The Love for Three Oranges, the suite Lieutenant Kijé, the ballet Romeo and Juliet—from which "Dance of the Knights" is taken—and Peter and the Wolf. Of the established forms and genres in which he worked, he created—excluding juvenilia—seven completed operas, seven symphonies, eight ballets, five piano concertos, two violin concertos, a cello concerto, a symphony-concerto for cello and orchestra, and nine completed piano sonatas.
A graduate of the Saint Petersburg Conservatory, Prokofiev initially made his name as an iconoclastic composer-pianist, achieving notoriety with a series of ferociously dissonant and virtuosic works for his instrument, including his first two piano concertos. In 1915, Prokofiev made a decisive break from the standard composer-pianist category with his orchestral Scythian Suite, compiled from music originally composed for a ballet commissioned by Sergei Diaghilev of the Ballets Russes. Diaghilev commissioned three further ballets from Prokofiev—Chout, Le pas d'acier and The Prodigal Son—which, at the time of their original production, all caused a sensation among both critics and colleagues. But Prokofiev's greatest interest was opera, and he composed several works in that genre, including The Gambler and The Fiery Angel. Prokofiev's one operatic success during his lifetime was The Love for Three Oranges, composed for the Chicago Opera and performed over the following decade in Europe and Russia. (Full article...) -
Elena Nestorovna Mikhnenko (Russian: Елена Несторовна Михненко; 1922–1993) was the daughter of the Ukrainian anarchist revolutionaries Nestor Makhno and Halyna Kuzmenko. Born in exile, she spent her early life in France, where she was living at the outbreak of World War II. Following the occupation of France, Mikhnenko was captured and conscripted into forced labour in Nazi Germany. She was subsequently arrested by Soviet state security, which first imprisoned her for "anti-Soviet agitation" and then exiled her to the Kazakh Soviet Socialist Republic. She lived and worked in Kazakhstan for the rest of her life. (Full article...)
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Nikolai Viktorovich Podgorny (18 February [O.S. 5 February] 1903 – 12 January 1983) was a Soviet statesman who served as the Chairman of the Presidium of the Supreme Soviet, the head of state of the Soviet Union, from 1965 to 1977.
Podgorny was born to a Ukrainian working-class family in the city of Karlovka on 18 February 1903. He later graduated from a local worker's school in 1926 before completing his education at the Kiev Technological Institute of Food Industry in 1931. In 1930, Podgorny became a member of the ruling Communist Party of the Soviet Union and climbed up the Soviet hierarchy after years of service to the country's centrally planned economy. By 1953, Podgorny became Second Secretary of the Communist Party of Ukraine in 1953 before later serving as First Secretary of the Communist Party of Ukraine from 1957 to 1963. (Full article...) -
Operation Barbarossa was the invasion of the Soviet Union by Nazi Germany and several of its European Axis allies starting on Sunday, 22 June 1941, during World War II. More than 3.8 million Axis troops invaded the western Soviet Union along a 2,900-kilometer (1,800 mi) front, with the main goal of capturing territory up to a line between Arkhangelsk and Astrakhan, known as the A-A line. The attack became the largest and costliest military offensive in history, with around 10 million combatants taking part in the opening phase and over 8 million casualties by the end of the operation on 5 December 1941. It marked a major escalation of World War II, opened the Eastern Front—the largest and deadliest land war in history—and brought the Soviet Union into the Allied powers.
The operation, code-named after the Holy Roman Emperor Frederick Barbarossa ("red beard"), put into action Nazi Germany's ideological goals of eradicating communism and conquering the western Soviet Union to repopulate it with Germans under Generalplan Ost, which planned for the extermination of the native Slavic peoples by mass deportation to Siberia, Germanisation, enslavement, and genocide. The material targets of the invasion were the agricultural and mineral resources of territories such as Ukraine and Byelorussia and oil fields in the Caucasus. The Axis eventually captured five million Soviet Red Army troops on the Eastern Front and deliberately starved to death or otherwise killed 3.3 million prisoners of war, as well as millions of civilians. Mass shootings and gassing operations, carried out by German paramilitary death squads and collaborators, murdered over a million Soviet Jews as part of the Holocaust. In the two years leading up to the invasion, Nazi Germany and the Soviet Union signed political and economic pacts for strategic purposes. Following the Soviet occupation of Bessarabia and Northern Bukovina in July 1940, the German High Command began planning an invasion of the country, which was approved by Adolf Hitler in December. In early 1941, Soviet leader Joseph Stalin, despite receiving intelligence about an imminent attack, did not order a mobilization of the Red Army, fearing that it might provoke Germany. As a result, Soviet forces were largely caught unprepared when the invasion began, with many units positioned poorly and understrength. (Full article...)
![Image 1 Stanisław Marcin Ulam (Polish: [sta'ɲiswaf 'mart͡ɕin 'ulam]; 13 April 1909 – 13 May 1984) was a Polish and American mathematician, nuclear physicist and computer scientist. He participated in the Manhattan Project, originated the Teller–Ulam design of thermonuclear weapons, discovered the concept of the cellular automaton, invented the Monte Carlo method of computation, and suggested nuclear pulse propulsion. In pure and applied mathematics, he proved a number of theorems and proposed several conjectures. Born into a wealthy Polish Jewish family in Lemberg, Austria-Hungary; Ulam studied mathematics at the Lwów Polytechnic Institute, where he earned his PhD in 1933 under the supervision of Kazimierz Kuratowski and Włodzimierz Stożek. In 1935, John von Neumann, whom Ulam had met in Warsaw, invited him to come to the Institute for Advanced Study in Princeton, New Jersey, for a few months. From 1936 to 1939, he spent summers in Poland and academic years at Harvard University in Cambridge, Massachusetts, where he worked to establish important results regarding ergodic theory. On 20 August 1939, he sailed for the United States for the last time with his 17-year-old brother Adam Ulam. He became an assistant professor at the University of Wisconsin–Madison in 1940, and a United States citizen in 1941. (Full article...)](/wiki/File:Blank.png)
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Featured pictures
These are Featured pictures that the Wikimedia Commons community has chosen as the highest quality on the site.
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Photograph: Anatoly ShcherbakThe Royal Kurgan is a 4th century BC kurgan (burial barrow) located near present-day Kerch, Crimea. The mound is almost 20 metres high and its base perimeter is about 250 metres. It holds a burial chamber with a square floor plan which gradually merges into the circular shape of a corbelled dome ("false vault"). It is assumed that the Royal Kurgan was the final resting place of a ruler of the Bosporan Kingdom. -
Photograph: AmakuhaThe burning of the Trade Unions Building—used as the headquarters of the Euromaidan movement—during the 2014 Ukrainian revolution, following a failed attempt by the Ukrainian police to capture the building. After the fire, the damaged building was covered with large canvas screens on two sides with the words "Glory to Ukraine" printed on them in large letters. -
Photo credit: Peter DuhonUkrainian fashion model Nataliya Gotsiy modeling for Cynthia Rowley, Spring 2007 New York Fashion Week. She was the winner of the Ford Supermodel of the World 2004 search. She has appeared on the cover of French Elle and Italian Marie Claire and modeled for Behnaz Sarafpour, Christian Lacroix, Diane von Furstenberg, Dior, Dolce & Gabbana, Dries van Noten, Gucci, Oscar de la Renta, Valentino, and Vivienne Westwood, among others. -
Photograph: George ChernilevskyThe ChS8 is an electric mainline passenger locomotive used in Russia and Ukraine. Built between 1983 and 1989, it was developed for pulling long passenger trains (28–32 carriages) at speeds of 100 kilometres per hour (60 mph) or faster. Since 2010 Russia has switched to more energy-efficient designs, such as the EP10 and EP20. -
Photograph credit: Max AlpertKombat (Russian for 'battalion commander') is a black-and-white photograph by Soviet photographer Max Alpert. It depicts a Soviet military officer, armed with a TT pistol, raising his unit for an attack during World War II. This work is regarded as one of the most iconic Soviet World War II photographs, yet neither the date nor the subject is known with certainty. According to the most widely accepted version, it depicts junior politruk Aleksei Gordeyevich Yeryomenko, minutes before his death on 12 July 1942, in Voroshilovgrad Oblast, now part of Ukraine. The photograph is in the archives of RIA Novosti, a Russian state-owned news agency. -
Painting: UnknownThe Adoration of the Shepherds is a common subject in the Nativity of Jesus in art. The scene, based on the Biblical account in Luke 2, depicts shepherds as near witnesses to the birth of Jesus in Bethlehem, arriving soon after the actual birth. It is often combined in art with the Adoration of the Magi, in which case it is typically just referred to by the latter title. The example here comes from 17th-century Ukraine and is currently held at the Ivan Honchar Museum. -
Artist: William Simpson; Lithographer: Edmond Morin; Restoration: NativeForeignerA tinted lithograph, titled "Embarkation of the sick at Balaklava", shows injured and ill soldiers in the Crimean War boarding boats to take them to hospital facilities. Modern nursing had its roots in the war, as war correspondents for newspapers reported the scandalous treatment of wounded soldiers in the first desperate winter, prompting the pioneering work of women such as Florence Nightingale, Mary Seacole, Frances Margaret Taylor and others. -
Photo: Noodle snacksMushrooms of Armillaria hinnulea, a species of honey fungus (or "pidpenky", from Ukrainian). Honey fungi are parasitic fungi that live on trees and woody shrubs. As a forest pathogen, it can be very destructive because unlike most parasites, it does not need to moderate its growth in order to avoid killing its host, since it will continue to thrive on the dead material. Honey fungi are long lived and form some of the largest living organisms in the world, including one that covers more than 3.4 sq mi (8.8 km2) and is thousands of years old. The mushrooms are edible, but can be easily confused with poisonous Galerina species, which can grow side-by-side with Armillaria. -
A map showing caesium-137 contamination in Belarus, Russia, and Ukraine (in curies per square kilometer) in 1996, ten years after the Chernobyl disaster struck the Chernobyl Nuclear Power Plant. The disaster contaminated 162,160 square kilometres (62,610 sq mi) of land and is widely considered the worst nuclear power plant accident in history. -
Winston Churchill, Franklin D. Roosevelt, and Joseph Stalin sitting together at the Yalta Conference, which took place February 4–11, 1945. The so-called "Big Three" met to discuss the re-establishment of the nations of Europe following World War II. Although a number of agreements were reached, Stalin broke his promises regarding Poland, and the Soviet Union annexed the regions of Eastern Europe it controlled, or converted them to satellite states. -
Map credit: Nicolas de FerA 1691 French map of Kamianets-Podilskyi, Ukraine, depicting the city's old town neighborhood and castle, surrounded by the winding Smotrych River. It was originally part of Kievan Rus' and annexed into the First Polish Republic, but at the time of the map's creation, the city was part of the Ottoman Empire. It shortly returned to Poland and later became part of the Russian Empire with the Second Partition of Poland in 1793. -
Artist: William Simpson; Restoration: NativeForeignerThe 6th (Inniskilling) Dragoons and 5th Dragoon Guards engage the Russians in this lithograph of the "Charge of the Heavy Brigade", a short engagement during the Battle of Balaclava during the Crimean War. Russian cavalry had attacked the British camp, but in roughly ten minutes of fighting, they suffered 40 to 50 killed and more than 200 wounded and were forced to retreat.
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Did you know (auto-generated)
- ... that Sarah Ashton-Cirillo, covering the Russian invasion of Ukraine, said that Ukrainians care less about her being transgender than Americans do?
- ... that following the energy price shock caused by the Russian invasion of Ukraine, the Turkish government intervened to have the country's renewable energy subsidise coal and gas?
- ... that Ukrainian Sheriffs went to summer school after being shot?
- ... that Halyna Kuzmenko promoted the Ukrainization of the Makhnovist movement, successfully increasing the use of the Ukrainian language by Russian speakers?
- ... that J. T. Blatty was a tennis star and US Army captain before photographing military volunteers in Ukraine?
- ... that the 2022 essay and short story collection Kilometer 101 was published shortly after the author fled Russia due to the Russian invasion of Ukraine?
More did you know -
- ... that according to legend, a tunnel leads from the Kamianets-Podilskyi Castle to the Khotyn Fortress which is 20 kilometres (12 mi) away?
- ... that although the secular music of Mykola Leontovych was well known in the twentieth century, the Liturgy of St. John Chrysostom was little known because of a ban on sacred music in the Soviet Union?
- ... that among many historic landmarks at the Andrew's Descent in Kyiv, there is a medieval Gothic style castle that locals call the "Castle of Richard the Lion Heart" due to the legend the 12th century King of England had visited the building?
- ... that the Khreschatyk is the main street of Ukrainian capital Kyiv on which Orange Revolution and other historical events mainly took place?
- ... that the Privat Group is one of the few Ukrainian companies that own industries in the United States?
- ... that Vasyl Avramenko is often referred as "The father of the Ukrainian dance"?
Selected article -
Presidential elections were held in Ukraine on 31 March 2019. As none of the 39 candidates on the ballot received an absolute majority of the initial vote, a runoff was held on 21 April between the top two vote-getters: Volodymyr Zelenskyy, a television personality, and Petro Poroshenko, the incumbent president. The Central Election Commission (CEC) announced that Zelenskyy won the second round with 73.22% of the total vote (or 74.96% of the valid vote). The elections were recognized as free and fair by the Organization for Security and Co-operation in Europe.
Poroshenko became the third incumbent Ukrainian president to directly lose reelection, after Viktor Yushchenko in 2010 and Leonid Kravchuk in 1994 (only Leonid Kuchma has ever won reelection, in 1999). Zelenskyy was sworn in as the sixth President of Ukraine in May 2019. (Full article...)
In the news
- 8 April 2025 – Russo-Ukrainian War
- 2025 Belgorod Oblast incursion
- Ukrainian president Volodymyr Zelenskyy confirms the presence of Ukrainian troops active in Russia's Belgorod Oblast. (BBC News)
- 8 April 2025 – China and the Russian invasion of Ukraine, China–Russia relations, China–Ukraine relations
- Ukrainian President Volodymyr Zelenskyy reports that Ukrainian armed forces captured two Chinese citizens fighting for the Russian military in Donetsk. (BBC)
- 6 April 2025 – Russian invasion of Ukraine
- 2025 Sumy Oblast incursion
- Russian troops reportedly capture the village of Basivka in Sumy Oblast, Ukraine. (Reuters)
- Kyiv strikes
- A Russian airstrike in Darnytskyi District, Kyiv, Ukraine, kills one person and injures three others. (CTV News)
- Kryvyi Rih strikes
- The death toll from Friday's missile strike on Kryvyi Rih, Ukraine, rises to 20 deaths, including several children, and 75 injuries. (CTV News)
- 5 April 2025 – Russian invasion of Ukraine
- Kryvyi Rih strikes
Selected anniversaries for April
- April 16, 2000 — Ukraine's national referendum takes place on the issue of reformation the governing system of Ukraine.
- April 22, 2006 — Two homemade bombs exploded in different supermarkets in the Ukrainian city of Kharkiv.
- April 26, 1986 — Reactor No. 4 of the Chernobyl Nuclear Power Plant exploded at 01:23 A.M.
- April 29, 1918 — Constitution of the Ukrainian People's Republic, a constitutional document, was approved by the Central Rada, but never announced.
- April 29, 1918 — The Holiday of Ukrainian Sea. On this day the main parts of Black Sea fleet in Sevastopol hoisted ukrainian flags.
Photo gallery
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Streets of Mukacheve in the old part of town -
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Interiour view of the Pochayiv Lavra in Ukraine. -
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A view of Lviv Old Town from the High Castle. -
The Swallow's Nest is one of the Neo-Gothic châteaux fantastiques near Yalta; it was built in 1912. -
A view of Lviv -
Zbarazh (Ukrainian: Збараж, Polish: Zbaraż, Yiddish: Zbarj) is a small city in the Ternopil Oblast (province) of western Ukraine. It is the administrative center of the Zbarazh Raion (district), and is located in the historic region of Galicia. The major attraction of the city is the Zbarazh Castle that played a key role during the Khmelnytsky Uprising, the heroic defense of which eventually led to change of momentum and extinguishing the Cossack revolt. -
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Trinity Church and Monastery in Chernihiv, Ukraine -
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An 1691 French map of the city of Kamianets-Podilskyi, located in western Ukraine.
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A wooden bridge leads to the entrance to the Khomutovska Steppe in Donetsk Oblast. -
St Andrew's Church of Kyiv (1749–1854) -
The square in front of the theater in Chernivtsi. -
Potemkin Stairs in Odesa, Ukraine. The higher perspective allows a person to see both the stairs and landings. -
View on the lower fortress of the Kamianets-Podilskyi Castle
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