December 21, 1965: UN General Assembly Resolution Opposes Interventions by One State into Affairs of Another

The UN General Assembly adopts Resolution 2131, titled, “Declaration on the Inadmissibility of Intervention in the Domestic Affairs of States and the Protection of Their Independence and Sovereignty,” which recognizes that “armed intervention is synonymous with aggression and, as such, is contrary to the basic principles on which peaceful international cooperation between States should be built.” It also states that “direct intervention, subversion and all forms of indirect intervention are contrary to these principles and, consequently, constitute a violation of the Charter of the United Nations.” In its declaration, which as a General Assembly resolution is non-binding, it prohibits all forms of intervention by one state “in the internal or external affairs of any other State.” [United Nations, 12/21/1965]