The Lithuanian Reform Movement Sąjūdis emerged in June 1988 and quickly became the leading vehicle for Lithuanian national mobilization, setting the stage for the 1990 independence restoration.
The Estonian SSR’s legislature adopted the Declaration on the Sovereignty of the Estonian SSR, asserting the supremacy of Estonian laws over USSR laws—an early formal breakthrough of the Singing Revolution toward state restoration.
Lithuania’s Supreme Council adopted the Act of the Re-Establishment of the State of Lithuania, asserting continuity with the interwar republic and declaring independence from the USSR—widely treated as the first such 1990 breakaway act.
Latvia’s Supreme Soviet adopted the declaration “On the Restoration of Independence of the Republic of Latvia,” initiating a transitional process to restore full independence.
The First Congress of People’s Deputies of the Russian SFSR adopted a Declaration of State Sovereignty, asserting the priority of Russian laws over USSR legislation and accelerating the “sovereignty parade” across the Union.
The Byelorussian SSR Supreme Soviet adopted a Declaration of State Sovereignty (a key step later elevated to constitutional-law status in August 1991).
Armenia’s Supreme Council adopted a Declaration of State Sovereignty, laying out claims to independent state attributes (e.g., symbols and institutions) and providing a constitutional foundation for eventual independence.
Voters in the Estonian SSR approved a referendum asking whether they wanted the restoration of national independence and sovereignty, reinforcing the legal-political mandate for restoration steps later in 1991.
Georgia’s Supreme Council proclaimed independence on the anniversary of the 1989 Tbilisi tragedy (and following a March 1991 referendum), becoming one of the earliest non-Baltic republics to issue a full independence declaration.
During the August 1991 coup attempt in Moscow, Estonia’s Supreme Council proclaimed the full restoration of independence, treating Soviet rule as an illegal occupation and terminating it.
Amid the failed August 1991 coup, Latvia adopted the constitutional law “On the Statehood of the Republic of Latvia,” ending the transitional period and restoring de facto independence.
Ukraine’s parliament (Verkhovna Rada) adopted the Act of Declaration of Independence, a decisive break that would later be ratified by a nationwide referendum.
Moldova’s parliament adopted the Declaration of Independence following the failed August 1991 coup attempt, formally establishing the state’s claim to sovereignty outside the USSR framework.
The Supreme Council adopted the Declaration on State Independence of the Republic of Kyrgyzstan, marking the republic’s formal separation from USSR authority.
Azerbaijan’s Supreme Soviet adopted a Constitutional Act on the Declaration of Independence, later confirmed by a referendum in December 1991.
Ukraine held a nationwide referendum asking voters to confirm the August 24 Act; an overwhelming majority endorsed independence, strengthening domestic legitimacy and international recognition.
Leaders of Russia, Ukraine, and Belarus signed the Belovezha Accords, declaring that the USSR had ceased to exist and establishing the Commonwealth of Independent States (CIS).
Kazakhstan’s Supreme Soviet adopted the constitutional law “On the State Independence of the Republic of Kazakhstan,” often noted as the last Union republic to declare independence.
At the Alma-Ata meeting, additional former Soviet republics joined the CIS framework via the protocol to the CIS-creation agreement, consolidating the political reality of Soviet dissolution.
The Soviet of Republics (upper chamber of the USSR Supreme Soviet) recognized the collapse of the Union and voted the USSR out of existence, providing the final internal legal act of dissolution.
Nationalist Movements and Independence Declarations (1988–1991)
