The Uniting for Peace resolution UNGA resolution A/RES377 (pioneered by US Secretary of State Dean Acheson to avoid a veto on Korea from the Soviet Union) sought to find a way around obstruction by one or more members of the P5:
“Resolves that if the Security Council, because of lack of unanimity of the permanent members, fails to exercise its primary responsibility for the maintenance of international peace and security in any case where there appears to be a threat to the peace, breach of the peace, or act of aggression, the General Assembly shall consider the matter immediately with a view to making appropriate recommendations to Members for collective measures, including in the case of a breach of the peace or act of aggression the use of armed force when necessary, to maintain or restore international peace and security. If not in session at the time, the General Assembly may meet in emergency special session within twenty-four hours of the request therefor. Such emergency special session shall be called if requested by the Security Council on the vote of any seven members, or by a majority of the Members of the United Nations.”
An emergency special session is requested by a majority of UN Member States to the Secretary-General. Since the transfer of an issue from the Security Council to the General Assembly is considered a procedural matter it is therefore not subject to the P5 veto. The Uniting for Peace procedure has been used on ten occasions to facilitate UN action short of the use of force but its use has been rare in recent decades with the last use being in 1997. Other matters considered in separate sessions were the Suez Crisis, the Soviet invasion of Hungary, the crisis in Lebanon, crisis in the Democratic Republic of the Congo, the Middle East (Six-Day War), the Soviet invasion of Afghanistan, the Israeli-Palestine conflict, South African occupation of Namibia (South-West Africa), the Israeli occupation of the Golan Heights and Occupied East Jerusalem and Palestinian Territory. The latter session reconvened 18 times, most recently in 2009.