After the Cold War, How Did U

After the Cold War, how did U.S. involvement in foreign affairs change?

A) It shifted increasingly toward realism and away from idealistic concerns.
B) It mostly retreated back to a policy of neutrality and isolationism.
C) It became more centered on human rights and nation-building efforts.
D) It involved large increases in the amount of foreign aid as a percentage of the U.S. budget.
E) It primarily came through the United Nations Security Council.