Polish–Soviet War in the context of "Anti-Soviet"

The Byelorussian Soviet Socialist Republic (BSSR, Byelorussian SSR or Byelorussia; Belarusian: Беларуская Савецкая Сацыялістычная Рэспубліка; Russian: Белорусская Советская Социалистическая Республика), also known as Soviet Belarus or simply Belarus, was a republic of the Soviet Union (USSR). It existed between 1920 and 1922 as an independent state, and afterwards as one of fifteen constituent republics of the USSR from 1922 to 1991, with its own legislation from 1990 to 1991. The republic was ruled by the Communist Party of Byelorussia. It was also known as the White Russian Soviet Socialist Republic. Minsk was the capital and largest city of the republic.

Following the Treaty of Brest-Litovsk in March 1918, which ended Russia's involvement in World War I, the Belarusian Democratic Republic (BDR) was proclaimed under German occupation; however, as German troops left, the Socialist Soviet Republic of Byelorussia was established in its place by the Bolsheviks in December, and it was later merged with the Lithuanian Soviet Socialist Republic in 1919 to form the Socialist Soviet Republic of Lithuania and Belorussia, which ceased to exist as a result of the Polish occupation during the Polish–Soviet War. Following a peace treaty with Lithuania, the Socialist Soviet Republic of Byelorussia was re-founded on 31 July 1920 and later became known as the Byelorussian Soviet Socialist Republic.

Maxime Weygand (French pronunciation: [vɛɡɑ̃]; 21 January 1867 – 28 January 1965) was a French military commander in World War I and World War II, as well as a high ranking member of the Vichy regime.

Born in Belgium, Weygand was raised in France and educated at the Saint-Cyr military academy in Paris. After graduating in 1887, he went on to become an instructor at the Saumur Cavalry School. During World War I, Weygand served as a staff officer to General (later Marshal) Ferdinand Foch. He then served as an advisor to Poland in the Polish–Soviet War and later High Commissioner of the Levant. In 1931, Weygand was appointed Chief of Staff of the French Army, a position he served until his retirement in 1935 at the age of 68.

The Declaration on the Creation of the Union of Soviet Socialist Republics is a historical document which, together with the Treaty on the Creation of the Union of Soviet Socialist Republics, formed the constitutional basis for the creation of the USSR as a multinational state.

The Declaration stated the reasons necessitating the formation of a union between all existing Soviet republics into one united socialist state and expressed willingness to undertake a 'permanent revolution', exporting the Socialist Revolution to other states, primarily in the West, as evidenced by the recent Polish–Soviet War. The Declaration also stressed that the creation of the USSR was a voluntary union of peoples with equal rights, whereby each Soviet republic retained the right to freely secede from the Union, a provision that was used as the legal basis for the independence of several republics and the subsequent dissolution of the Union in 1991.

Symon Vasyliovych Petliura (Ukrainian: Симон Васильович Петлюра; 22 May [O.S. 10 May] 1879 – 25 May 1926) was a Ukrainian politician and journalist. He was the Supreme Commander of the Ukrainian People's Army (UNA) and led the Ukrainian People's Republic during the Ukrainian War of Independence, a part of the wider Russian Civil War.

Petliura was born to a family of Cossack heritage in Poltava. From an early age he embraced socialism and Ukrainian nationalism, which he advocated through his highly prolific career as a journalist. After the 1917 February Revolution overthrew the Tsarist monarchy, the Ukrainian People's Republic was proclaimed and Petliura was elected head of its military. The Republic was briefly interrupted by the pro-German Ukrainian State, but in late 1918 Petliura, along with other members of the socialist Directorate of Ukraine, organised a revolt and overthrew the regime, restoring the Republic. He became the leader of the Directorate in early 1919, after the Bolsheviks invaded Ukraine and captured its capital. Facing imminent defeat, Petliura entered an alliance with Józef Piłsudski's Poland. The Polish–Soviet War concluded with Poland remaining independent and gaining some Ukrainian and Belorussian lands, while most of Ukraine remained under Soviet control, forcing Petliura into exile. He initially directed the government-in-exile from Poland, but eventually settled in Paris.

The Treaty of Riga was signed in Riga, Latvia, on 18 March 1921 between Poland on one side and Soviet Russia (acting also on behalf of Soviet Belarus) and Soviet Ukraine on the other, ending the Polish–Soviet War (1919–1921). The chief negotiators of the peace were Jan Dąbski for the Polish side and Adolph Joffe for the Soviet side.

Under the treaty, Poland recognized Soviet Ukraine and Belarus, abrogating its 1920 Treaty of Warsaw with the Ukrainian People's Republic. The Treaty of Riga established a Polish–Soviet border about 250 kilometres (160 mi) east of the Curzon Line, incorporating large numbers of Ukrainians and Belarusians into the Second Polish Republic. Poland, which agreed to withdraw from areas further east (notably Minsk), renounced claims to the Polish–Lithuanian Commonwealth's border prior to the 1772 First Partition of Poland, recovering only those eastern regions (Kresy) lost to Russia in the 1795 Third Partition. Russia and Ukraine agreed to withdraw their claims to lands west of the demarcated border line. Poland, by recognising the puppet states of the USSR and simultaneously withdrawing recognition of the UPR (its only ally in the Polish-Bolshevik war), was in fact giving up on the federation programme, while Russia approved of the fact that the whole of Galicia, as well as the territories of the former Russian Empire, inhabited largely by non-Polish people, were to be found within Poland's borders. The treaty also addressed matters of sovereignty, citizenship, national minorities, repatriation, and diplomatic and commercial relations. The Treaty lasted until the invasion of Poland by the Soviet Union in 1939, and their borders were redefined by an agreement in 1945.

The Belarusian People's Republic (BNR; Belarusian: Беларуская Народная Рэспубліка, romanized: Biełaruskaja Narodnaja Respublika, БНР), also known as the Belarusian Democratic Republic, was a state proclaimed by the Council of the Belarusian Democratic Republic in its Second Constituent Charter on 9 March 1918 during World War I. The Council proclaimed the Belarusian Democratic Republic independent in its Third Constituent Charter on 25 March 1918 during the occupation of contemporary Belarus by the Imperial German Army.

The government of the Belarusian Democratic Republic never had power over the whole territory of Belarus. In 1919, it co-existed with an alternative Soviet Russia-controlled Socialist Soviet Republic of Byelorussia (which later became part of the Lithuanian–Byelorussian Soviet Socialist Republic), moving its seat of government to Vilnius and Hrodna, but ceased to exist due to the partition of the whole Belarusian territory between the Bolshevik Red Army and the Polish Armed Forces as a result of the Polish–Soviet War of 1919–1921.

The Socialist Soviet Republic of Lithuania and Belorussia (SSR LiB), alternatively referred to as the Socialist Soviet Republic of Lithuania and White Russia or simply Litbel, was a Soviet republic that existed within the parts of the territories of modern Belarus and Lithuania for approximately five months during the Lithuanian–Soviet War and the Polish–Soviet War in 1919. The Litbel republic was created in February 1919 formally through the merger of the short-lived Lithuanian Soviet Socialist Republic and the Socialist Soviet Republic of Belorussia.

Often described as a puppet state of Soviet Russia, during its brief existence the SSR LiB government had limited authority over the territories it claimed. By August 1919, the SSR LiB had lost control over all of its claimed territories, as the Polish Army and, to a lesser extent, Lithuanian Army advanced.