Estonian Soviet Socialist Republic

The Estonian Soviet Socialist Republic (abbreviated Estonian SSR, Soviet Estonia, or simply Estonia [ˈeˑstʲi] ^ⓘ) was an administrative subunit (union republic) of the former Soviet Union (USSR), covering the occupied and annexed territory of Estonia in 1940–1941 and 1944–1991. The Estonian SSR was nominally established to replace the until then independent Republic of Estonia on 21 July 1940, a month after the 16–17 June 1940 Soviet military invasion and occupation of the country during World War II. After the installation of a Stalinist government which, backed by the occupying Soviet Red Army, declared Estonia a Soviet constituency, the Estonian SSR was subsequently incorporated into the Soviet Union as a union republic on 6 August 1940. Estonia was occupied by Nazi Germany in 1941, and administered as a part of Reichskommissariat Ostland until it was reconquered by the USSR in 1944.

The majority of the world's countries did not recognise the incorporation of Estonia into the Soviet Union de jure and only recognised its Soviet administration de facto or not at all. A number of countries continued to recognise Estonian diplomats and consuls who still functioned in the name of their former government. This policy of non-recognition gave rise to the principle of legal continuity, which held that de jure, Estonia remained an independent state under occupation throughout the period 1940–1991.

On 16 November 1988, Estonia became the first of the then Soviet-controlled countries to declare state sovereignty from the central government in Moscow. On 30 March 1990, the newly elected parliament declared that the Republic of Estonia had been illegally occupied since 1940, and formally announced a transitional period for the restoration of the country's full independence. Subsequently, on 8 May 1990, the Supreme Soviet ended the use of the Soviet symbols as state symbols together with the name Estonian Soviet Socialist Republic and adopted Republic of Estonia as the official name of the state. The parliament of Estonia declared the re-establishment of full independence on 20 August 1991. The Soviet Union formally recognised the independence of Estonia on 6 September 1991.

The Nazi-Soviet Pact which was signed on 23 August 1939, a week before the outbreak of World War II, secretly assigned Estonia to the Soviet "sphere of influence". On 24 September 1939, warships of the Soviet Navy blocked the major ports of Estonia, a neutral country, and Soviet bombers began patrolling over and around its capital city Tallinn. Moscow demanded that Estonia allow the USSR to establish Soviet military bases on its territory and station 25,000 troops in these bases "for the duration of the European war". The government of Estonia yielded to the ultimatum, signing the corresponding mutual assistance agreement on 28 September 1939.

On 12 June 1940, the order for total military blockade of Estonia was given to the Soviet Baltic fleet. On 14 June, the Soviet military blockade of Estonia went into effect while the world's attention was focused on the fall of Paris to Nazi Germany. Two Soviet bombers shot down a Finnish passenger aircraft "Kaleva" flying from Tallinn to Helsinki carrying three diplomatic pouches from the U.S. legations in Tallinn, Riga and Helsinki. On 16 June, Soviet NKVD troops raided border posts in Estonia (along with Lithuania and Latvia). Soviet leader Joseph Stalin claimed that the 1939 mutual assistance treaties had been violated, and gave six-hour ultimatums for new governments to be formed in each country, including lists of persons for cabinet posts provided by the Kremlin. The Soviet ultimatum to Estonia was issued on 16 June 1940. The Estonian government decided, in accordance with the Kellogg–Briand Pact, to not respond to the ultimatums by military means. Given the overwhelming Soviet force both on the borders and inside the country, the order was given not to resist to avoid bloodshed and open war.

On 16–17 June 1940, the Red Army emerged from its military bases in Estonia and, aided by an additional 90,000 Soviet troops, took over the country, occupying the entire territory of the Republic of Estonia. Most of the Estonian Defence Forces and the Estonian Defence League surrendered according to the orders, and were disarmed by the Red Army. Only the Estonian Independent Signal Battalion stationed at Raua Street in Tallinn began armed resistance. As the Soviet troops brought in additional reinforcements supported by six armoured fighting vehicles, the battle at Raua Street lasted for several hours until sundown. There was one dead, several wounded on the Estonian side and about 10 killed and more wounded on the Soviet side. Finally the military resistance was ended with negotiations and the Independent Signal Battalion surrendered and was disarmed.

By 18 June 1940, large-scale military operations for the occupation of Estonia, Latvia and Lithuania were complete. In the following days, the Soviet troops organised and supported Stalinist "demonstrations" in Tallinn and other larger cities. Thereafter, state administrations were liquidated and replaced by Soviet cadres, followed by mass repression. Time magazine reported on 24 June, that "Half a million men and countless tanks" of the Red Army "moved to safeguard [Russia's] frontier against conquest-drunk Germany," one week before the Fall of France. On 21 June 1940, the Soviet military occupation of the Republic of Estonia was complete. That day, the President Konstantin Päts (deported to Ufa, Russian SFSR on 30 July 1940 and arrested a few weeks later) was pressured into affirming the Andrei Zhdanov-appointed puppet government of Johannes Vares, following the arrival of demonstrators accompanied by Red Army troops with armoured vehicles to the residence of the Estonian president. The flag of Estonia was replaced with a Red flag on Tallinn's Pikk Hermann tower.

On 14–15 July 1940, rigged extraordinary parliamentary elections were held by the occupation authorities, in which voters were presented with a single list of pro-Stalinist candidates. To maximise voter turnout to legitimise the new system, the voters' documents were stamped in voting facilities for future identification of voting, along with a threat running in the main Communist newspaper, Rahva Hääl, that "It would be extremely unwise to shirk elections. ... Only people's enemies stay at home on election day." Each ballot carried only the Soviet-assigned candidate's name, with the only way to register opposition being to strike out that name on the ballot. According to official election results, the Communist "Union of the Estonian Working People" bloc won 92.8% of the votes with 84.1% of the population attending the elections. Time magazine reported that, following the elections, tribunals were set up to judge and punish "traitors to the people", which included opponents of Sovietization and those who did not vote for incorporation in the Soviet Union. This election is considered illegal, since the amended electoral law—along with hundreds of other laws passed by the Vares government—had not been approved by the upper house of parliament, as required by the Estonian constitution. The upper house had been dissolved soon after the Soviet occupation and was never reconvened.