Richard M. Nixon hoped to make his mark on history by applying his broad understanding of international relations to a changing world. Diverging from Republican orthodoxy, he made dramatic overtures to the Soviet Union and China. Yet anticommunism remained central to U.S. policy. Nixon backed repressive regimes around the world and aggressively pursued the war in Vietnam, despite mounting opposition. He expanded the conflict into Cambodia and Laos and ferociously bombed North Vietnam. In the end, however, he was forced to settle for peace without victory.