The Cold War was primarily caused by the ideological conflict between capitalism, as represented by the United States and its allies, and communism, as represented by the Soviet Union and its allies.

The Cold War is generally considered to have begun in 1947, with the Truman Doctrine and the Marshall Plan, which were designed to contain the spread of communism.

The Cold War is generally considered to have ended in 1991, with the dissolution of the Soviet Union.

The United Nations played a variety of roles during the Cold War, including mediating between the Soviet Union and the United States, providing humanitarian aid to countries affected by the Cold War, and promoting peace and security around the world.

The Vietnam War was not a major event of the Cold War, as it was primarily a civil war within Vietnam.

The Truman Doctrine was the policy that the United States adopted to contain the spread of communism. It was announced by President Harry S. Truman in 1947.

The Marshall Plan was the plan that the United States adopted to provide economic aid to Western Europe after World War II. It was announced by Secretary of State George Marshall in 1947.

The Eisenhower Doctrine was the policy that the United States adopted to prevent the spread of communism in Latin America. It was announced by President Dwight D. Eisenhower in 1954.

The Kennedy Doctrine was the policy that the United States adopted to promote democracy and human rights around the world. It was announced by President John F. Kennedy in 1961.

The Suez Crisis was not a major Cold War crisis, as it was primarily a regional conflict between Egypt and Israel.

France was not a major Cold War superpower, as it did not have the same level of military and economic power as the United States and the Soviet Union.

The Falklands War was not a major Cold War proxy war, as it was primarily a territorial dispute between Argentina and the United Kingdom.

The New START Treaty was not a major Cold War arms control treaty, as it was signed in 2010, after the end of the Cold War.

The Secret Intelligence Service (SIS) was not a major Cold War espionage agency, as it is the intelligence agency of the United Kingdom, not the United States.