http://www.un-documents.net/a20r2131.htm21 December 1965
Twentieth session
Agenda item 107
Resolution adopted by the General Assembly
2131 (XX). Declaration on the Inadmissibility of Intervention in the Domestic Affairs of States and the Protection of Their Independence and Sovereignty
No State has the right to intervene, directly or indirectly, for any reason whatever, in the internal or external affairs of any other State. Consequently, armed intervention and all other forms of interference or attempted threats against the personality of the State or against its political, economic and cultural elements, are condemned.