The Russian Revolution of ’90-91 continues: The Soviet Socialist Republic of Estonia declares its independence from the rest of the Soviet Union.
[added 10/16/2020]
Subsequent Events:
References:
History of the Soviet Union (1985-1991) – Wikipedia, the free encyclopedia
en.wikipedia.org/wiki/History_of_the_Soviet_Union_(1985-1991)
Estonia – Wikipedia, the free encyclopedia
en.wikipedia.org/wiki/Estonia#Soviet_Estonia