In the Yalta Conference, three important men expressed support for the creation of an international peacekeeping organization. They also agreed that nations freed from Germany should have the right “to create democratic institutions of their own choice.”
The North Atlantic Treaty Organization, also called the North Atlantic Alliance, is an intergovernmental military alliance between 29 North American and European countries. The organization implements the North Atlantic Treaty that was signed on April 1949
The United States quickly came up with a foreign policy to deal with the Cold War, they decided to prevent the Soviet Union from expanding its influence around the world, calling it Containment.