Russian is used as Official Language at U.N. Headquaters.
Russian become:
Official language of the United Nations (except the ICJ) (1 Feb. 1946)
Official language of the Security Council (24 June 1946)
Working language of the General Assembly (21 Dec. 1968)
Working language of the Security Council (22 Jan. 1969)
Historical Development of Russian Language at United Nations.
On 1 February 1946, General Assembly resolution 2 (I) established Russian as official language, and English and French as working languages.
On 24 June 1946, Security Council adopted its Provisional Rules of Procedure S/96, naming Russian as official languages, and English and French as working languages.
On 21 December 1968, General Assembly resolution 2479 (XXIII) decided to include Russian as a working language of the General Assembly and suggested the Security Council consider adding Russian and Spanish as working languages.
On 22 January 1969, Security Council resolution 263 (1969) included Russian as working languages of the Security Council.
