19h 19min, mar 11, 1985 y - Abandoned the Brezhnev Doctrine
Description:
 This meant that the Eastern Bloc was not going to be a commitment of the USSR as it needed to focus on personal goals for survival, not tension building within the Eastern Bloc. 
Added to timeline:
Date:
19h 19min, mar 11, 1985 y
Now
 ~ 40 years ago