OPANAL cause Treaty of Tlatelolco
The OPANAL (which stands for el Organismo para la Proscripción de las Armas Nucleares en la América Latina y el Caribe) is an international organization which promotes a non-aggression pact and nuclear disarmament in much of the Americas. In English, its name is the Agency for the Prohibition of Nuclear Weapons in Latin America and the Caribbean. The agency was created as a result of the Treaty of Tlatelolco, ratified in 1969, which forbids its signatory nations from use, storage, or transport of nuclear weapons.
The first official Secretary General was Leopoldo Benites from Ecuador.