Complete the following sentence: Moscow considered Eastern Europe to be a buffer zone for the forward defense of its western borders and ensured its control of the region by transforming the East European countries into subservient allies. Complete the following sentence: Moscow considered Eastern Europe to be a buffer zone for the forward defense of its western borders and ensured its control of the region by transforming the East European countries into subservient allies. 1956, tropa sovietica aplastó un levantamiento popular y rebelión en Hungria y
1968<unk> to end the Czechoslovak government's Prague Spring attempts at reform. In addition to military occupation and intervention, the Soviet Union controlled Eastern European states through its ability to supply or withhold vital natural resources.<unk> In addition to military occupation and intervention, the Soviet Union controlled Eastern European states through its ability to supply or withhold vital natural resources.