"The Soviet economic crisis played a central and often underestimated role in the last three years of Soviet history. In conjunction with revelations of past communist crimes, it contributed to mass discontent and mobilization against central authority... The purposeful as well as unintended destruction of the Soviet economy, along with its finances, may be considered the best candidate as a principal cause of Soviet disintegration."
January 1, 1970
https://en.wikiquote.org/wiki/Soviet_Union