What was the significance of the invasion of Hungary and the invasion of Czechoslovakia?

The invasion of Hungary in 1956 and Czechoslovakia in 1968 were significant as they demonstrated the Soviet Union's commitment to maintaining control over Eastern Europe and suppressing any movements towards independence and reform. Both invasions illustrated the limits of Western influence and the Cold War dynamics, as the U.S. and its allies largely refrained from intervening militarily. These events also highlighted the tensions between reformist aspirations within the Eastern Bloc and the Soviet desire for political uniformity, ultimately reinforcing the divide between East and West during the Cold War.