Is it true that the Warsaw pact was a mutual defense agreement in eastern Europe?

The Warsaw Pact was a treaty between the Soviet Union, its satellite states in Eastern Europe, and Albania, which was also known as the Treaty of Friendship, Cooperation, and Mutual Assistance. It was signed in Warsaw, Poland, on May 14, 1955, and remained in effect until it was dissolved on July 1, 1991.

The treaty stated that the member states would come to each other's defense if any one of them was attacked by an outside force. The Warsaw Pact also provided for the creation of a joint military command, which was based in Moscow and was headed by a Soviet general.

The Warsaw Pact was intended to counter the North Atlantic Treaty Organization (NATO), which had been formed in 1949 by the United States and its Western allies. The two alliances were often at odds with each other during the Cold War, and the Warsaw Pact was seen as a way to deter NATO from attacking the Soviet Union or its allies.

The Warsaw Pact was dissolved in 1991 after the collapse of the Soviet Union. This left many of its member states without a mutual defense agreement, and some of them have since joined NATO.