Deaths on December 23

Aleksander Warma, Estonian lieutenant and politician, Prime Minister of Estonia in exile (b. 1890)

Aleksander Warma VR I/3 (also Varma; 22 June [O.S. 10 June] 1890 – 23 December 1970) was an Estonian navy officer, diplomat and painter.

12 Jan

Nigerian Civil War
Biafra capitulates, ending the Nigerian Civil War.
28 Apr

Richard Nixon
Vietnam War: U.S. President Richard Nixon formally authorizes American combat troops to fight communist sanctuaries in Cambodia.
5 Sep

101st Airborne Division
Vietnam War: Operation Jefferson Glenn begins: The United States 101st Airborne Division and the South Vietnamese 1st Infantry Division initiate a new operation in Thừa Thiên-Huế Province.
28 Sep

Gamal Abdel Nasser
Egyptian President Gamal Abdel Nasser dies of a heart attack in Cairo. Anwar Sadat is named as Nasser's temporary successor, and will later become the permanent successor.
8 Oct

Richard Nixon
Vietnam War: In Paris, a Communist delegation rejects US President Richard Nixon's October 7 peace proposal as "a manoeuvre to deceive world opinion".