Arab oil ministers decide to end most restrictions on exports of oil to the United States but continue embargo against the Netherlands, Portugal, South Africa, and Rhodesia.
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.
The average US retail price of a gallon of regular gasoline rose 43% from 38.5¢ in May 1973 to 55.1¢ in June 1974. State governments asked citizens not to put up Christmas lights. Oregon banned Christmas and commercial lighting altogether. Politicians called for a national gasoline rationing program.