A/RES/54/60 Page 2 Caribbean in commemoration of the thirtieth anniversary of the opening for signature of the Treaty of Tlatelolco, Recalling that in its preamble the Treaty of Tlatelolco states that military denuclearized zones are not an end in themselves but rather a means for achieving general and complete disarmament at a later stage, Recalling also that in its resolution 2286 (XXII) of 5 December 1967 it welcomed with special satisfaction the Treaty of Tlatelolco as an event of historic significance in the efforts to prevent the proliferation of nuclear weapons and to promote international peace and security, Recalling further that in 1990, 1991 and 1992 the General Conference of the Agency for the Prohibition of Nuclear Weapons in Latin America and the Caribbean approved and opened for signature a set of amendments2 to the Treaty of Tlatelolco,1 with the aim of enabling the full entry into force of that instrument, Recalling resolution C/E/RES.27 of the Council of the Agency for the Prohibition of Nuclear Weapons in Latin America and the Caribbean,3 in which the Council called for the promotion of cooperation and consultations with other nuclear-weapon-free zones, Noting with satisfaction that the Treaty of Tlatelolco is now in force for thirty-two sovereign States of the region, Also noting with satisfaction that on 18 January 1999 Colombia and on 20 January 1999 Costa Rica deposited their instruments of ratification of the amendments to the Treaty of Tlatelolco approved by the General Conference of the Agency for the Prohibition of Nuclear Weapons in Latin America and the Caribbean in its resolutions 267 (E–V) of 3 July 1990, 268 (XII) of 10 May 1991 and 290 (E–VII) of 26 August 1992, Further noting with satisfaction that the amended Treaty of Tlatelolco is fully in force for Argentina, Barbados, Brazil, Chile, Colombia, Costa Rica, Guyana, Jamaica, Mexico, Paraguay, Peru, Suriname, Uruguay and Venezuela, 1. Welcomes the concrete steps taken by some countries of the region during the past year for the consolidation of the regime of military denuclearization established by the Treaty for the Prohibition of Nuclear Weapons in Latin America and the Caribbean (Treaty of Tlatelolco);1 2. Urges the countries of the region that have not yet done so to deposit their instruments of ratification of the amendments to the Treaty of Tlatelolco approved by the General Conference of the Agency for the Prohibition of Nuclear Weapons in Latin America and the Caribbean in its resolutions 267 (E–V), 268 (XII) and 290 (E–VII); 2 A/47/467, annex. 3 See CD/1392. /...