When Thiu, who had not even been informed of the secret negotiations, presented the draft new agreement, he was furious with Kissinger and Nixon (perfectly aware of South Vietnam`s negotiating position) and refused to accept them without substantial changes. He then gave several public radio speeches, saying that the proposed agreement was worse than it actually was. Hanoi was stunned because he believed he had been deceived by Kissinger in a propaganda tour. On 26 October, Radio Hanoi provided important details on the draft agreement. On January 27, 1973, a ceasefire came into effect in Vietnam and the last American soldiers left on March 29. Negotiations have not been easy. In October 1972, Henry Kissinger had drawn up a peace agreement with the North Vietnamese. However, Nguyen Van Thieu, the president of South Vietnam, refused to sign and the North Vietnamese withdrew from the talks. The provisions of the agreement were immediately and often violated by North and South Vietnamese forces without an official response from the United States. The North Vietnamese have accused the United States of carrying out bombings in northern Vietnam during this period. In March 1973, open fighting broke out and North Vietnamese crimes extended their control until the end of the year. Two years later, a massive North Vietnamese offensive seized South Vietnam on April 30, 1975, after which the two countries separated since 1954 met on July 2, 1976 as Vietnam.  North Vietnam insisted for three years that the agreement could not be reached unless the United States agreed to remove South Vietnamese President Nguyen Vén Thiu from power and replace him with someone more acceptable to Hanoi.
Nixon and Kissinger were not prepared to sign an agreement to overthrow a government that had not overthrew the NLF by force of arms, although the scale of North Vietnam`s claims is controversial. Historian Marilyn B. Young argues that the content of Hanois` proposal was systematically distorted by his initial plea for Thiu`s assimilation to what Kissinger advocated as a demand for his downfall.  Negotiations leading up to the agreement began in 1968 after several long delays. As a result of the agreement, the International Monitoring Commission (ICC) was replaced by the International Monitoring Commission (ICCS) to comply with the agreement. The main negotiators of the agreement were Henry Kissinger, U.S. national security adviser, and Lé C Théc, a member of the North Vietnamese political bureau. Both men were awarded the Nobel Peace Prize in 1973 for their efforts, although he refused to accept it. As promised, the men were released into teams, those considered to be the last group to leave Vietnam on March 29, 1973. However, on the same day, Viet Cong announced that Army Captain Robert White, who has not been brought to justice since his disappearance in November 1969, was still in captivity.
Years later, White said, “You forgot me” until his captors reminded him of the superiors.