Israel and Jordan signed a peace treaty, settling relations between the two countries and pledging that neither would allow its territory to become a staging ground for military strikes by a third country.
Ngô Đình Diệm proclaimed himself president of the newly created Republic of Vietnam after defeating former emperor Bảo Đại in a fraudulent referendum supervised by his brother Ngô Đình Nhu.
The Illinois Memorial, honoring Union army soldiers from Illinois who fought at the Siege of Vicksburg, was dedicated at Vicksburg National Military Park.