 Complete the following phrase:  The Soviet Union attempted to stifle this activity by economic blockade in 1990, but it failed, and other Soviet Republics soon followed suit and declared their independence from Moscow, as well. He was also extremely dubious of the view that Mikhail Gorbachev was trying to liberalize the Soviet Union and that Lithuania should not prevent him from doing so. Landsbergis also played a crucial role during the 