They felt that it was necessary to support our interests in the long run; they felt it necessary to have a balance of power throughout the world in order to ensure peace and prosperity. One has to take into consideration geopolitics when discussing balance of power. The main purpose is stability by using different political philosophies based on geography, and self-interest. If the major powers pursued their self-interest rationally and predictably, equilibrium would emerge from the conflicting interest.
Nixon knew that a strong America is essential to global equilibrium, and counted on stability to produce it. Under Nixons new policy partnership, strength, and the willingness to negotiate were the three pillars essential in keeping peace. The policy would stop trying to eliminate communism and win the Cold War, but rather replace it through new initiatives directed toward finding areas of cooperation. In fact it was clear that the Soviet Union was Nixons biggest partner towards peace.
Nixon parted with the philosophy of containment, and thought that negotiations and peaceful competition would lead to strengthening of democracies. These negotiations became known as Detente. When Nixon announced to the world his new plan for foreign affairs, it became known as the Nixon Doctrine. It was an outline of Americas foreign policy that dealt with the ordeal that the past involvement in Korea and Vietnam, which were countries with no prior commitment to us, and in regions not protected by any alliances.
As a result he outlined the criteria for involvement in world affairs. He stated, 1) The United States would keep its treaty commitments. 2) The United States would provide a shield if a nuclear power threatens the freedom of a nation allied with us or of a nation whose survival we consider vital to our security. 3) In cases involving non-nuclear aggression, the United States would look to the nation directly threatened to assume the primary responsibility of providing the manpower for defense.
It was thought that if America would not always be a safety net for smaller countries, they would increase their defense systems to be more adequate for the job. In the end the Nixon-Kissinger foreign policy boils down to stability, and in order to achieve that stability there must be a global balance of power. They want Americans to keep their idealistic values and promote peace, but realize what the country has the capability and authority to do in the world.