Brezhnev produced a treaty to limit strategic nuclear weapons. In January 1973, he announced an accord with North Viet Nam to end American involvement in Indochina. In 1974, his Secretary of State, Henry Kissinger, negotiated disengagement agreements between Israel and its opponents, Egypt and Syria. In his 1972 bid for office, Nixon defeated Democratic candidate George McGovern by one of the widest margins on record. Within a few months, his administration was embattled over the so-called "Watergate" scandal, stemming from a break-in at the offices of the Democratic National Committee during the 1972 campaign. The break-in was traced to officials of the Committee to Re-elect the President. A number of administration officials resigned; some were later convicted of offenses connected with efforts to cover up the affair. Nixon denied any personal involvement, but the courts forced him to yield tape recordings which indicated that he had, in fact, tried to divert the investigation. As a result of unrelated scandals in Maryland, Vice President Spiro T. Agnew resigned in 1973. Nixon nominated, and Congress approved, House Minority Leader Gerald R. Ford as Vice President. Faced with what seemed almost certain impeachment, Nixon announced on August 8, 1974, that he would resign the next day to begin "that process of healing which is so desperately needed in America."

In his last years, Nixon gained praise as an elder statesman. By the time of his death on April 22, 1994, he had written numerous books on his experiences in public life and on foreign policy. .