In response to a speech made by the Indian prime minister Jawaharlal Nehru on 10 November 1961, the General Assembly designated 1965, the twentieth year of the United Nations, as International Co-operation Year.
One reason was the conviction that increased public awareness of the extent and significance of existing everyday co-operation would lead to a better appreciation of the true nature of the world community and of the common interests of mankind.
Also the thought was that devoting a year to international co-operation would help to bring about increased world understanding and co-operation, and thereby facilitate the settlement of major international problems.
Remarks upon proclaiming 1965 as International
Cooperation Year by president Lyndon
All the International Years proclaimed by the General Assembly.
Catalogue - International Co-operation Year
South Arabia, Federation of
Union of Soviet Socialist Republics
Catalogue - UNO 20th anniversary
Papua and New Guinea
UNOstamps subject page 004