Additional Protocols

The Treaty of Tlatelolco has two Additional Protocols.

Additional Protocol I is directed towards extra-continental or continental States having de jure or de facto international responsibility for territories situated in the Zone of Application of the Treaty of Tlatelolco. These States undertake legally binding commitments to apply the status of denuclearization in respect of warlike purposes as defined in Articles 1, 3, 5 and 13 of the Treaty for the Prohibition of Nuclear Weapons in Latin America and the Caribbean in territories for which, de jure or de facto, they are internationally responsible and which lie within the limits of the geographical zone established in that Treaty (Article 1, Additional Protocol I). Additional Protocol I has been signed and ratified by the United States, France, The Netherlands, and the United Kingdom.

Additional Protocol II is directed towards nuclear-weapon States. Said States undertake legally binding commitments not to contribute in any way to the performance of acts involving a violation of the obligations of Article 1 of the Treaty in the territories to which the Treaty applies in accordance with Article 4 thereof. In addition, States Parties to Additional Protocol II commit themselves not to use or threaten to use nuclear weapons against the Contracting Parties of the Treaty for the Prohibition of Nuclear Weapons in Latin America and the Caribbean. Additional Protocol II has been signed and ratified by China, the United States, France, the United Kingdom, and the Soviet Union.

Source: Office of the Legal Adviser of the Ministry of Foreign Affairs of Mexico, as Depositary Government of the Treaty of Tlatelolco and its Additional Protocols I and II.