Elected in 1968, U.S. President Richard M. Nixon began a policy of slow disengagement from the war. The goal was to gradually build up the South Vietnamese Army so that it could fight the war on its own. This policy became the cornerstone of the so-called "Nixon Doctrine." As applied to Vietnam, the doctrine was called "Vietnamization." The goal of Vietnamization was to enable the South Vietnamese army to increasingly hold its own against the NLF and the North Vietnamese Army.