Answer:
The United States further extended it's containment policy in Latin America.
Explanation:
I'm going to go with John Locke, not to sure though you should double check to make sure because I might be wrong.
The policy contributed most to the nuclear arms race was Mutual Assured Destruction
This means that both sides knew that any attack upon the other would be devastating to themselves, therefore restraining them from attacking the other. Each side possesses enough nuclear weapons to obliterate the other side that causes them to restrain from attacking afraid of the annihilation.