Declaration of State Sovereignty of the Russian SFSR
The Declaration of State Sovereignty of the Russian SFSR (Russian: Декларация о государственном суверенитете РСФСР, romanized: Deklaratsiya o gosudarstvennom suverenitete RSFSR) was a political act of the Russian Soviet Federative Socialist Republic, then part of the Soviet Union, which marked the beginning of constitutional reform in Russia. The Declaration was adopted by the First Congress of People's Deputies of the Russian SFSR on 12 June 1990.
Source: Wikipedia — Declaration of State Sovereignty of the Russian SFSR (CC BY-SA 4.0)