The agreement guaranteed the territorial integrity of Vietnam and, like the Geneva Conference of 1954, called for national elections in the North and South. The Paris Peace Accords stipulated a sixty-day period for the total withdrawal of U.S. forces.[131]
The agreements were negotiated by US National Security Advisor Henry Kissinger and North Vietnamese Politburo member Lê Đức Thọ. South Vietnamese President Nguyen Van Thieu was not involved in the final negotiations, and publicly criticized the proposed agreement. However, anti-war pressures within the United States forced Nixon and Kissinger to pressure Thieu to sign the agreement and enable the withdrawal of American forces. In multiple letters to the South Vietnamese president, Nixon had promised that the United States would defend Thieu's government, should the North Vietnamese violate the accords.[132]
In December 1974, months after Ford took office, North Vietnamese forces invaded the province of Phuoc Long. General Trần Văn Trà sought to gauge any South Vietnamese or American response to the invasion, as well as to solve logistical issues, before proceeding with the invasion.