On This Day in History

Soviet premier Nikita Khrushchev and U.S. vice president Richard Nixon held an impromptu debate (pictured) at the opening of the American National Exhibition at Sokolniki Park in Moscow.

During a speech in Montreal, French president Charles de Gaulle (pictured) declared "Long live free Quebec!", a statement that was interpreted as support for Quebec independence from Canada.

The Metapolitefsi period began with Konstantinos Karamanlis taking office as Prime Minister of Greece after the collapse of the military junta.

The Australian swimming team, nicknamed the Quietly Confident Quartet, won the men's 4 × 100 metre medley relay at the Moscow Olympics, the only time that the United States, which boycotted the games, has not won the event at the Olympics.

Iran–Iraq War: In opposition to the American plan to protect Kuwaiti tankers, Iran laid mines and damaged the SS Bridgeton, resulting in a propaganda victory for Iran.

A gunman entered the United States Capitol and opened fire, killing two police officers.

Air Algérie Flight 5017 disappeared from radar shortly after take-off from Ouagadougou, Burkina Faso; its wreckage was found the following day in Mali with no survivors.

Boris Johnson became Prime Minister of the United Kingdom after winning the Conservative Party leadership election.