Russian Soviet Federative Socialist Republic:

On June 12, 1990, the Congress of People's Deputies of the Republic adopted the Declaration of State Sovereignty of the Russian SFSR, which was the beginning of the "War of Laws", pitting the Soviet Union against the Russian Federation and other constituent republics.

Please answer a question about this article. If the question is unanswerable, say "unanswerable". What was the name of the period inaugurated by the passage of the Declaration of State Sovereignty of the Russian SFSR?
the "War of Laws"