the excerptVanity Fair
Nixon wanted to plan the removal of all U.S. troops by the end of 1971, but Kissinger cautioned that, if North Vietnam then de-stabilized Saigon during the following year, events could have an adverse effect on the president's campaign. According to Haldeman's diaries, Kissinger advocated a pullout in the fall of 1972, "so that if any bad results follow they will be too late to affect the election." He apparently had nothing to say about the American lives that would be lost by deliberately prolonging the war.
Isaac Chotiner