The process of the break-up of the Soviet Union is not yet complete

On December 8, 1991 the elected leaders of Russia, Ukraine, and Belarus signed an agreement about the dissolution of the Soviet Union. What was behind the collapse. Who came out of the cataclysm the best and the worst among the member republics? To what extent can the current Russian-Ukrainian war be traced back to the collapse of the Soviet Union? 

Csilla Fedinec was interviewed by Mandiner, which can be read here.