The Warsaw
Treaty of Friendship Cooperation and Mutual Assistance was signed
in 1955 by Albania,
Bulgaria,
Czechoslovakia,
German Democratic Republic (East
Germany), Hungary,
Poland,
Romania
and the Soviet Union. The Warsaw Pact was
created in response to the decision to allow the Federal
Republic of Germany (West Germany) to join the North
Atlantic Treaty Organization (NATO).
The Warsaw
Pact allowed for the Red Army to be based
in member states. It also provided for a unified military command
and a system of mutual assistance. This enabled the Soviet
Union to launch a multinational invasion of Czechoslovakia
in 1968.

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