On 19 October 2018, as part of his participation in the 73rd Session of the First Committee (Disarmament and International Security) of the United Nations General Assembly, the Secretary-General of OPANAL, Ambassador Luiz Filipe de Macedo Soares, met with H.E. Mr. António Guterres, Secretary-General of the United Nations.
Every year, OPANAL, the sole international organization in the world entirely devoted to nuclear disarmament and the non-proliferation of nuclear weapons, participates in the First Committee of the United Nations General Assembly.