Altamont Free Concert: At a free concert performed by the Rolling Stones, eighteen-year old Meredith Hunter is stabbed to death by Hells Angels security guards.

A coal mine explosion at Monongah, West Virginia, kills 362 workers.

An Indonesian Air Force Fokker F27 Friendship crashes near Halim Perdanakusuma International Airport, killing 11.

The Nefertiti Bust is discovered.

The Troubles: The Irish National Liberation Army bombs a pub frequented by British soldiers in Ballykelly, Northern Ireland, killing eleven soldiers and six civilians.

An Iranian Air Force C-130 military transport aircraft crashes into a ten-floor apartment building in a residential area of Tehran, killing all 94 on board and 12 more on the ground.

The United States Food and Drug Administration approves Saquinavir, the first protease inhibitor to treat HIV/AIDS. Within 2 years of its approval, annual deaths from AIDS in the United States fall from over 50,000 to approximately 18,000.

The United States declaration of war upon the United Kingdom is signed by President James Madison, beginning the War of 1812.

Former Egyptian President Hosni Mubarak is sentenced to life imprisonment for his role in the killing of demonstrators during the 2011 Egyptian revolution.

The Troubles: Fleeing from the police, a Provisional IRA unit takes a British couple hostage in their flat on Balcombe Street, London, beginning a six-day siege.

A series of bombings across Iraq, including Baghdad, Hillah and Kirkuk, kills at least 93 people and wounds over 300 others.

One year to the day after the signing of the Anglo-Irish Treaty, the Irish Free State comes into existence.

War of 1812: U.S. President James Madison asks the Congress to declare war on the United Kingdom.

The Washington Monument in Washington, D.C., is completed.

World War I: USS Jacob Jones is the first American destroyer to be sunk by enemy action when it is torpedoed by German submarine SM U-53.

Donald Trump's administration officially announces the recognition of Jerusalem as the capital of Israel.

A military jet of the Italian Air Force, abandoned by its pilot after an on-board fire, crashed into a high school near Bologna, Italy, killing 12 students and injuring 88 other people.

Halifax Explosion: A munitions explosion near Halifax, Nova Scotia kills more than 1,900 people in the largest artificial explosion up to that time.

Mursili II launches a campaign against the Kingdom of Azzi-Hayasa.

The pageant for the Diamond Jubilee of Elizabeth II takes place on the River Thames.