The Warsaw Pact was a defensive alliance like NATO, it was the USSR
and its satellites, all its members agreed to help each other in case of
war with joint command structure but dominated with the Soviet Union
The USSR continued to fear Germany and the
Warsaw Pact was set up in 1955 in respones to
Germany gaining NATO
The Warsaw Pact created a Soviet bloc equal to NATO
formalising the division of east and west as there were two
military alliances
It gave the soviets a chance to place more of its military
forces in eastern Europe making it easier to keep the
satellites in line