Sunday, March 18, 1691

Syrian civil war: The U.S. Air Force carried out an airstrike in al-Baghuz Fawqani, killing as many as 80, a disputed number of whom were civilians.

Gunmen attacked the Bardo National Museum in Tunisia, killing 24 people.

As per a court order, the feeding tube of Terri Schiavo, an American woman who suffered brain damage, was removed at the request of her husband, fueling a worldwide debate on euthanasia.

The deadliest fire in Philippine history broke out at a nightclub in Quezon City, causing 162 deaths.

Unidentified thieves stole thirteen works of art collectively valued at $500 million from the Isabella Stewart Gardner Museum (pictured) in Boston, Massachusetts.

The first episode of the soap opera Neighbours was broadcast on the Seven Network, later becoming the longest-running drama in Australian television history.

The punk group the Clash released their first single, "White Riot", described as their "most controversial song" due to its lyrics about class economics and race.

U.S. postal workers began an eight-day strike after Congress raised their wages by only 4 percent despite increasing its own pay by 41 percent.

Vietnam War: The United States began secretly bombing the Sihanouk Trail in Cambodia, used by communist forces to infiltrate South Vietnam.

Cosmonaut Alexei Leonov ventured outside the Soviet spacecraft Voskhod 2, becoming the first person to walk in space.

Tibetan uprising: After the 14th Dalai Lama sought refuge at Sera Monastery in Lhasa, Tibet, Chinese forces bombarded the monastery, inflicting severe destruction and killing hundreds of Buddhist monks.

The deadliest tornado in U.S. history spawned in Missouri and traveled more than 219 miles (352 km) across Illinois and Indiana, leaving one of the longest continuous tornado tracks ever recorded.