Soviet–Lithuanian Mutual Assistance Treaty

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The Soviet–Lithuanian Mutual Assistance Treaty (Lithuanian: Lietuvos-Sovietų Sąjungos savitarpio pagalbos sutartis) was a bilateral treaty signed between the Soviet Union and Lithuania on October 10, 1939. According to provisions outlined in the treaty, Lithuania would acquire about one fifth of the Vilnius Region, including Lithuania's historical capital, Vilnius, and in exchange would allow five Soviet military bases with 20,000 troops to be established across Lithuania. In essence the treaty with Lithuania was very similar to the treaties that the Soviet Union signed with Estonia on September 28, and with Latvia on October 5. According to official Soviet sources, the Soviet military was strengthening the defenses of a weak nation against possible attacks by Nazi Germany.[1] The treaty provided that Lithuania's sovereignty would not be affected.[2] However, in reality the treaty opened the door for the first Soviet occupation of Lithuania and was described by The New York Times as "virtual sacrifice of independence."[3]


Pre-war treaties[edit]

Map attached to the German–Soviet Boundary and Friendship Treaty dividing Eastern Europe into Soviet and German spheres of influence

Lithuania declared independence from the Russian Empire on February 16, 1918. On June 12, 1920, following the brief Lithuanian–Soviet War, a Soviet–Lithuanian Peace Treaty was signed. The Soviet Union recognized Lithuania's independence and its right to the Vilnius Region. The region was fiercely contested with Poland and fell under its control after Żeligowski's Mutiny in October 1920. It was then incorporated into the Republic of Central Lithuania which was a short-lived political entity without international recognition. The region was ceded to Poland in 1922 at the Peace of Riga after the Polish–Soviet War and confirmed internationally by the League of Nations.[4] The Lithuanians refused to recognize Polish control and continued to claim legal and moral rights to the region throughout the interwar period. The Soviet Union continued to support Lithuanian claims against sovereign Poland. The Soviets supported as well Lithuania's interests in the Klaipėda Region after the Klaipėda Revolt and signed the Soviet–Lithuanian Non-Aggression Pact in 1926, later extended it to 1944.[5]

On August 23, 1939, the Soviet Union and Nazi Germany signed the Molotov–Ribbentrop Pact and divided Eastern Europe into spheres of influence. According to pact's secret protocols, Lithuania was assigned to the German sphere of influence while Latvia and Estonia, the other two Baltic states, were assigned to the Soviets.[6] This different treatment could be explained by Lithuania's economic dependence on Germany. Germany accounted for approximately 80% of Lithuania's foreign trade and after the 1939 German ultimatum had control of Klaipėda, Lithuania's only port.[7] Also, Lithuania and Russia did not have a common border.[8]

World War II[edit]

On September 1, 1939, Germany invaded Poland. Wehrmacht pushed Polish forces behind the line agreed with the Soviets. Germans took control of the Lublin Voivodeship and eastern Warsaw Voivodeship.[9] When on September 17 Red Army invaded Poland, Soviet troops took over Vilnius Region, which according to the 1920 and 1926 Soviet–Lithuanian treaties was recognized to Lithuania.[9] As a result, Soviets and Germans re-negotiated the secret protocols of the Molotov–Ribbentrop Pact. On September 28, 1939, they signed the Boundary and Friendship Treaty.[10] Its secret attachment detailed that to compensate the Soviet Union for German-occupied Polish territories, Germany would transfer Lithuania, except for a small territory in Suvalkija, to the Soviet sphere of influence.[11] The exchange of territories was also motivated by Soviet control of Vilnius: the Soviet Union could exert significant influence on the Lithuanian government, which claimed Vilnius to be its de jure capital.[12] In the secret protocols, both Soviet Union and Germany explicitly recognized Lithuanian interest in Vilnius.[13]


Initial stance[edit]

On September 29, the next day after the Boundary and Friendship Treaty, Germany canceled planned talks with Lithuania and the Soviet Union informed Lithuania that it wished to open negotiations regarding future relationship between the two countries.[14] The new Soviet–Lithuanian negotiations were supposed to formally resolve the status of the Vilnius Region.[9] Lithuanian Minister of Foreign Affairs Juozas Urbšys arrived to Moscow on October 3. During the meeting Joseph Stalin personally informed Urbšys about the Soviet–German secret protocols and showed maps of the spheres of influence.[15] He demanded that Lithuania signed three separate treaties, according to which:[16]

  1. military bases would be established and up to 50,000 Soviet soldiers would be stationed in Lithuania (the original mutual assistance pact);
  2. Lithuanian territory west of the Šešupė River would be ceded to the Nazi Germany (as agreed between Germany and Soviet Union in the Boundary and Friendship Treaty);
  3. one portion of the Vilnius Region would be attached to Lithuania.

Urbšys' protested the Soviet bases arguing that it would mean virtual occupation of Lithuania.[14] Soviets argued that their army would protect Lithuania from possible attacks from Nazi Germany and that a similar treaty was already signed with Estonia. Urbšys argued that Lithuania's neutrality was enough to guarantee its security and proposed to strengthen Lithuanian army.[16] According to the Lithuanian brigadier general Musteikis, Urbšys told that Lithuanians refuses Vilnius Region as well as the Russian garrisons, however then nervous Stalin replied that "No matter if you take Vilnius or not, the Russian garrisons will enter Lithuania anyway".[17] Finally, Soviets agreed to reduce the number of troops to 35,000.[14] Urbšys then also bargained for more territories in the Vilnius Region, especially in the vicinity of Druskininkai and Švenčionys, territories with larger Lithuanian population.[16] The Soviets replied that the boundary draw by the 1920 peace treaty was inaccurate and that Belarusians also laid claims to the territory.[14] Soviets tentatively agreed that territories, where Lithuanian majority could be proven, would be transferred to Lithuania.[16] The most shocking demand was to cede part of Lithuanian territory to Germany.[14] Lithuanians decided to postpone any negotiations regarding territory transfer to Germany until Germans expressed clear demands.[14]


Lithuanian delegation before departing to Moscow on October 7, 1939. Urbšys is third from left.

Urbšys returned to Lithuania to consult the government. German officials confirmed that the secret protocols were real, and informed Lithuanians that transfer of the territory in Suvalkija was not an urgent matter.[14] Eventually, Nazi Germany sold this territory to the Soviet Union for 7.5 million dollars on January 10, 1941 in the German–Soviet Border and Commercial Agreement.[18] Lithuanians in principle agreed to sign the mutual assistance treaty, but were instructed to resist Soviet bases as much as possible. Alternatives included doubling Lithuanian army, exchanging military missions, and building fortifications on the western border with Germany similar to the Maginot Line in France.[16][19] On October 7, Lithuanian delegation, including General Stasys Raštikis and Deputy Prime Minister Kazys Bizauskas, returned to Moscow.[16] Stalin refused the proposed alternatives, but agreed to reduce the number of Soviet troops to 20,000 – about the size of the entire Lithuanian army.[9] Soviets wanted to sign the treaty right then to commemorate the 19th anniversary of the Żeligowski's Mutiny and Lithuania's loss of Vilnius.[14] Political rallies, organized in Vilnius demanding city's incorporation into the Byelorussian Soviet Socialist Republic, put additional pressure on Lithuanians and provided a sense of urgency.[9][14] Urbšys refused to sign and the talks receded for the second time.

In Lithuania, President Antanas Smetona doubted that it was worth gaining Vilnius for such a price and debated whether the negotiations could be broken off.[16] Bizauskas argued that refusing the treaty would not prevent Soviet Union from implementing its plan. The Soviet Union had already threatened Estonia with force in the case it refused their mutual assistance treaty[2] and was gathering forces in Vilnius Region in the east and in Latvia in the north.[13] In such light, the government decided to demand as much territory as possible. However, when the delegation returned to Moscow, it found the atmosphere changed.[16] Soviets were inflexible, refused further negotiations, and intimidated the delegation to sign the treaty. They presented a new draft, which combined the mutual assistance pact and transfer of Vilnius into one agreement.[16] The Lithuanian delegation had little choice but to sign the proposed treaty. After signing the treaty, Stalin invited the Lithuanian delegation to celebrate and watch two movies with him.[14] Urbšys informed the Lithuanian government about signing of the treaty only in the morning of October 11 – at the time the treaty was already published by Soviet news agency TASS.[20]


About one-fifth of Vilnius Region (dark orange) was ceded to Lithuania in exchange for four Soviet military bases (marked with stars) according to the Mutual Assistance Treaty

Articles of the treaty[edit]

The mutual assistance treaty contained nine articles:[21]

  • Article I: Transfer of Vilnius Region and the city of Vilnius to Lithuania
  • Article II: Mutual assistance in case of an attack
  • Article III: Soviet Union renders assistance to the Lithuanian Army in terms of munitions and equipment
  • Article IV: Soviet Union receives right to station its troops in Lithuania. Base locations are to be decided by a separate treaty.
  • Article V: Coordinated actions in case of an attack
  • Article VI: Agreement not to participate in alliances against the other party
  • Article VII: Sovereignty is not affected by this treaty
  • Article VIII: Articles II to VII are valid for a period of 15 years with an automatic extension for another 10 (note that transfer of Vilnius is permanent)
  • Article IX: Date of effect

The treaty also had a secret supplement, which specified that the Soviets could station only up to 20,000 of their troops.[22]

Location of Soviet troops[edit]

The treaty did not decide the exact location of the Soviet bases and 18-member Soviet delegation, led by Mikhail Kovalyov, was sent to Lithuania to discuss the specifics on October 22.[23] The Lithuanians sought to limit Soviet bases to Vilnius Region and southern Lithuania, offering Pabradė, Nemenčinė, Naujoji Vilnia, and Alytus.[24] They considered a base in Samogitia (western Lithuania) to be the worst possible outcome.[24] The Lithuanians preferred fewer, but bigger bases with no permanent runways for the aircraft. The Soviets initially proposed to have their bases in Vilnius, Kaunas, Alytus, Ukmergė, and Šiauliai.[24] The final agreement was signed on October 28, the same day when the Lithuanian army marched into Vilnius. A day before, another agreement determined the new border of eastern Lithuania: Lithuania received 6,739 km2 (2,602 sq mi) of territory with population of approximately 430,000.[16] The territory comprised about one fifth of the Vilnius Region recognized to Lithuania by the Soviet–Lithuanian Peace Treaty of 1920; population of Lithuania reached about 3.8 million.[25]

According to the final agreement, four military bases would be established in Lithuania with 18,786 military personnel from the 16th Special Rifle Corps, 5th Rifle Division, and 2nd Light Tank Brigade.[26] The bases were to be located in Alytus (infantry, artillery, and mechanized units with 8,000 troops), Prienai (infantry and artillery units with 2,500 soldiers), Gaižiūnai (mechanized and tank units with 3,500 troops), and in Naujoji Vilnia (headquarters, infantry and artillery units with 4,500 troops).[24] For comparison, on June 1, 1940 Lithuanian army had 22,265 soldiers and 1,728 officers.[27] While aircraft bases in Alytus and Gaižiūnai were under construction, Soviet aircraft were to be stationed in Kirtimai, a neighborhood of Vilnius.[24] The final location of the bases showed that the Soviets were more concerned with encircling Kaunas, the temporary capital, than with defending the country against a possible foreign attack.[24]


International and domestic reaction[edit]

The treaty was presented as proof of Soviet respect to small nations[28] and Stalin's benevolence by Soviet propaganda.[1] Russians emphasized that it was the second time the Soviet Union gave Vilnius to Lithuania[20] while the League of Nations failed to mediate Polish–Lithuanian dispute.[29] Soviets also worked to assure Lithuanians that Soviet friendship is effective protection from and a welcome alternative to Nazi aggression.[14] Polish government-in-exile officially protested the treaty as it did not recognize Russian conquest and claimed sovereignty over territories of the Second Polish Republic.[30] Lithuanians replied that the region was legally part of Lithuania.[31] Poles resented the transfer and as soon as the Soviet Army left Vilnius, anti-Lithuanian riots broke out accusing Lithuanians of betrayal.[32] France and Great Britain, traditional allies of Poland, also condemned the treaty.[14][16] Belarusian activists, who campaigned for Vilnius incorporation into the Byelorussian Soviet Socialist Republic, were arrested, deported, or executed by the Soviet authorities. The transfer upset their national aspirations to position Belarus as a successor to the former Grand Duchy of Lithuania.[31] Lithuanian relations with Vatican were expected to improve as the cause for tension, Vilnius Region assigned to Poland by the Concordat of 1925, now was under Lithuanian control.[33]

Lithuanian politicians attempted to show the regained Vilnius as a major diplomatic victory. The Lithuanian Nationalists Union, ruling political party in Lithuania since the 1926 coup, used celebrations of return of the city to increase its prestige and popularity.[22] The government stressed its competence and the opposition emphasized Soviet generosity.[29] While politicians publicly praised the Soviet Union and taunted "traditional Soviet–Lithuanian friendship," in private they understood this treaty was a serious threat to Lithuanian independence.[22] Popular attitude was reflected in a known slogan "Vilnius – mūsų, Lietuva – rusų" (Vilnius is ours, but Lithuania is Russia's).[26] After the treaty was signed, Lithuania lost its neutrality and could not independently execute its foreign policy.[2][16] For example, Lithuania could not support Finland when the Winter War broke out after Finland rejected a similar mutual assistance treaty proposed by Soviet Union.[26] In international politics, Lithuania became a Soviet satellite.[22]

In Vilnius Region[edit]

Lithuanian troops enter Vilnius. After orchestrated celebrations anti-Lithuanian riots broke out among the Polish population.

On October 28, the Lithuanian Army entered Vilnius for the first time since 1920. Before handing over the city to the Lithuanians, the Soviets robbed and transported to Soviet Union all valuables: equipment from factories (including Elektrit) and hospitals, vehicles and trains, cultural objects from museums and libraries.[24] After the Russian troops left, Polish residents, seeing the deal as a betrayal of Poland, protested against the Lithuanian government.[32] On October 30 – November 1, when bread price suddenly rose, clashes between local communists and Poles turned into a riot against the Jewish population.[34] Many Jewish shops were raided and some 35 people were injured.[35] Jews accused Lithuanian police of inaction and sympathizing with Polish rioters.[35] Soviet soldiers, uninvited by the Lithuanian government, helped to subdue the riots.[26]

The territory presented an economic challenge to Lithuania: unemployment was rampant, food was in short supply, valuables were stolen by Soviet army, war refugees were gathering from other former Polish territories.[25] The Lithuanian army would provide up to 25,000 daily rations of hot soup and bread to residents of Vilnius. Lithuanian government exchanged the Polish złoty to Lithuanian litas at a favorable rate, losing over 20 million litas.[25][36] The Lithuanian government decided to implement a land reform similar to the land reform executed in the 1920s.[36] Large estates would be nationalized and distributed to landless peasants in exchange for redemption dues payable in 36 years. Politicians hoped that such reform would weaken pro-Polish landowners and would win peasants' loyalty to the Lithuanian state. By March 1940, 90 estates and 23,000 hectares were distributed.[36] Lithuanians proceeded to "re-Lithuanize" cultural life in Vilnius Region. They closed many Polish cultural and educational institutions, including Stephan Batory University with over 3,000 students.[32] Lithuanians sought to introduce the Lithuanian language in public life and sponsored Lithuanian organizations and cultural activities.

In Lithuania[edit]

Future of the Vilnius Region caused frictions between political and military leaders in Lithuania. As first Soviet troops moved into Lithuania on November 14, the government, which included four generals, resigned.[37] A new civilian cabinet, led by controversial Prime Minister Antanas Merkys, was formed on November 21.[38] Lithuanians were careful to follow the treaty to a letter and not to give any excuses for Moscow to accuse them of treaty violations.[25] At first, delayed by the Winter War,[13] the Soviets did not interfere with Lithuania's domestic affairs[11] and Soviet soldiers were well-behaved in their bases.[22] The Lithuanian government started debating its options and what could be done to prepare for the future occupation. Despite various resolutions, nothing material was accomplished.[25] Lithuania had no counterweight to Soviet influence: its own forces were small, Germany was in effect Russia's ally, Poland was conquered, France and Great Britain had bigger issues in western Europe.[16] After the Winter War was over, Soviet Union turned its attention to the Baltic States.[11]

After months of intense propaganda and diplomatic pressure, the Soviets issued an ultimatum on June 14, 1940 – the same day when world's attention was focused on fall of Paris during the Battle of France.[2] Soviets accused Lithuania of violating the treaty and abducting Russian soldiers from their bases.[11] Soviets demanded that a new government, which would comply with the Mutual Assistance Treaty, would be formed and that an unspecified number of Soviet troops would be admitted to Lithuania.[39] With Soviet troops already in the country, it was impossible to mount military resistance.[2] Soviets took control of government institutions, installed a new pro-Soviet government, and announced elections to the People's Seimas. The proclaimed Lithuanian Soviet Socialist Republic was incorporated into the Soviet Union on August 3, 1940.[31]

See also[edit]


  1. ^ a b "Soviet Acclaimed Baltic's Protector". The New York Times: 5. 1939-10-12.
  2. ^ a b c d e Lane, Thomas (2001). Lithuania: Stepping Westward. Routledge. pp. 37–38. ISBN 0-415-26731-5.
  3. ^ Gedye, G.E.R. (1939-10-03). "Latvia Gets Delay on Moscow Terms; Lithuania Summoned as Finland Awaits Call to Round Out Baltic 'Peace Bloc'". The New York Times: 1, 6.
  4. ^ Miniotaite, Grazina (1999). "The Security Policy of Lithuania and the 'Integration Dilemma'" (PDF). NATO Academic Forum: 21.
  5. ^ Eidintas, Alfonsas; Vytautas Žalys; Alfred Erich Senn (September 1999). Ed. Edvardas Tuskenis (ed.). Lithuania in European Politics: The Years of the First Republic, 1918-1940 (Paperback ed.). New York: St. Martin's Press. pp. 108–110. ISBN 0-312-22458-3.
  6. ^ Raun, Toivo U. (2001). Estonia and the Estonians. Hoover Press. p. 139. ISBN 0-8179-2852-9.
  7. ^ Skirius, Juozas (2002). "Klaipėdos krašto aneksija 1939–1940 m.". Gimtoji istorija. Nuo 7 iki 12 klasės (in Lithuanian). Vilnius: Elektroninės leidybos namai. ISBN 9986-9216-9-4. Archived from the original on 2008-03-03. Retrieved 2008-03-14.
  8. ^ Senn, Alfred Erich (2007). Lithuania 1940: Revolution from Above. On the Boundary of Two Worlds: Identity, Freedom, and Moral Imagination in the Baltics. Rodopi. p. 10. ISBN 90-420-2225-6.
  9. ^ a b c d e Eidintas, Alfonsas (1991). Lietuvos Respublikos prezidentai (in Lithuanian). Vilnius: Šviesa. pp. 137–140. ISBN 5-430-01059-6.
  10. ^ Kershaw, Ian (2007). Fateful Choices: Ten Decisions that Changed the World, 1940–1941. Penguin Group. p. 259. ISBN 1-59420-123-4.
  11. ^ a b c d Vardys, Vytas Stanley; Judith B. Sedaitis (1997). Lithuania: The Rebel Nation. Westview Series on the Post-Soviet Republics. WestviewPress. p. 47. ISBN 0-8133-1839-4.
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  17. ^ Gureckas, Algimantas. "Ar Lietuva galėjo išsigelbėti 1939–1940 metais?". (in Lithuanian). Retrieved 30 June 2010.
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  33. ^ Matthews, Herbert L. (1939-10-19). "Pope Will Defend Christian Europe". The New York Times: 10.
  34. ^ "40 Russian Tanks are Sent to Vilna". The New York Times: 2. 1939-11-02.
  35. ^ a b Vareikis, Vygantas (2005). Kai ksenofobija virsta prievarta: lietuvių ir žydų santykių dinamika XIX a. – XX a. pirmojoje pusėje (in Lithuanian). Vilnius: Lithuanian Institute of History. p. 179. ISBN 9986-780-70-5.
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  38. ^ "Kaunas Mayor Forms Lithuanian Government". The New York Times: 2. 1939-11-21.
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