Satellite Empire of the USSR
Salami Tactics
State Police Spy Networks
COMECON
American attitude influenced by Mr. X article
Countries under communist control
Czechoslovakia resistance to communism
AVO
NKVD
DSS
Soviet Military Power used on Satellites
Soviets breached Yalta and Potsdam because...
Stalin broke his promise of free elections in Eastern Europe , and instead installed governments that were dominated by the Soviets (Yalta)
The Potsdam Conference will filled with disagreements, especially between the USSR and the UK/USA. Although a "compromise" was reached, neither side was happy about the agreement.
Thus, the Soviets breached the agreements to expand their influence in the face of the American threats.
Stage 1: The Soviets would set up a government in the country, initially establishing a broad alliance.
Stage 2: Each of the anti-Communist/ anti-Soviet parties would be "sliced off", one after another, leaving only pro-Communists
Stage Three: Only the Communist core would remain, and then ultimately, if necessary, Moscow-trained Communists would replace local Communists.
Hungary
Poland
Yugoslovakia
Bulgaria