NATO and THE WARSAW PACT

Read the three NATO links below. What were NATO and the Warsaw Pact? Who formed these alliances and why?

NATO is an organization that wanted to get alliance with other so that if one of them were attacked all of the other countries in NATO would come to their aide. European and North America were the ones who formed the organization.
Their main goal was to prevent or in other words to stopped the Soviet Union from building nuclear weapons.
NATO's main purpose was to safeguard member of the countries econically and politically means.

On the other hand, Warsaw Pact (May 14, 1955), was consisted mostly by Soviet Union. . The Soviet Union kept military personnel in the other countries of the alliance and kept them running socialist governments.
Khrushchev, came to be close to war with the U.S. clashed with China. He assumed power in early 1955 with Bulganin, so these two members of the Warsaw Pact created a defense by communist states of Europe under Soviet influence, in response to the admission of West Germany to NATO. The pact was dissolved in 1991.