In the early hours of June 11, UW student Georgann Hawkins vanished while walking down a brightly lit alley between her boyfriend's dormitory residence and her sorority house. The next morning, three Seattle homicide detectives and a criminalist combed the entire alleyway on their hands and knees, finding nothing. After Hawkins' disappearance was publicized, witnesses came forward to report seeing a man that night who was in an alley behind a nearby dormitory. He was on crutches with a leg cast and was struggling to carry a briefcase. One woman recalled that the man asked her to help him carry the case to his car, a light brown Volkswagen Beetle.
On 17 June 1974, a 9-kilogram (20 lb) bomb planted by the Provisional IRA exploded in Westminster Hall. The explosion and the resulting fire, which was fed by a ruptured gas main, injured 11 people and caused extensive damage.
During the previous two years, Nixon had made considerable progress in U.S.-Soviet relations, and he embarked on a second trip to the Soviet Union in 1974. He arrived in Moscow on June 27 to a welcome ceremony, cheering crowds, and a state dinner at the Grand Kremlin Palace that evening. Nixon and Brezhnev met in Yalta, where they discussed a proposed mutual defense pact, détente, and MIRVs. Nixon considered proposing a comprehensive test-ban treaty, but he felt that he would not have time to complete it during his presidency. There were no significant breakthroughs in these negotiations.