The dwarf planet Eris is discovered by Palomar Observatory-based astronomers, later motivating the International Astronomical Union (IAU) to define the term planet for the first time.

A suicide bombing at the Tel Aviv central bus station kills 23 people and injures over 100 more.

Georgian forces enter Tskhinvali, the capital of South Ossetia, Georgia, opening the 1991–92 South Ossetia War.

The Venera 5 space probe is launched at 06:28:08 UTC from Baikonur.

Cultural Revolution: The Shanghai People's Commune is established following the seizure of power from local city officials by revolutionaries.

In a speech given to the United States Congress, United States President Dwight D. Eisenhower announces the establishment of what will later be called the Eisenhower Doctrine.