Answer:
The mutual defense pact alliance created between the United States and other western nations with the aim of containing possible Soviet military aggression is the North Atlantic Treaty Organization, or NATO.
It was created in 1949 with the signing of the North Atlantic Treaty, and included countries such as the United States, Canada, the United Kingdom, and France, among others.
The primary goal of NATO was to provide collective security against potential Soviet aggression, in the context of the Cold war