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| 1990, March 11 |
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| Lithuania declared its independence after all 124 delegates to its new parliament voted in favor. They also voted to change the republic's name by dropping the words “Soviet Socialist.” Vytautas Landsbergis was elected chair (head of state). | 1 |
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| March 14 |
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| The all-Soviet Congress passed a resolution by a large majority that the Lithuanian declaration of independence had no legal force. | 2 |
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| March 17 |
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| Kazimiera Prunskiene was elected prime minister. | 3 |
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| March 22 |
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| Mikhail Gorbachev, using his new powers as Soviet president, increased pressure on Lithuania by forbidding the ownership of guns and tightening immigration and customs controls on the republic. There was also a show of strength in the capital, Vilnius, as the Red Army patrolled the streets in armored cars. On Apr. 21 the Soviet Union imposed an economic blockade on Lithuania, including the reduction of oil and gas supplies. | 4 |
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| June 23 |
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| The Lithuanian Supreme Council accepted in principle a moratorium on the declaration of independence, and the Soviet economic blockade ended. | 5 |
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| Dec. 8–9 |
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| The Lithuanian Communist Party reorganized itself as the Lithuanian Democratic Labor Party. | 6 |
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