Guyana signed the Treaty of Tlatelolco on January 16, 1995, on that same date it ratified the Treaty and on May 17, 1997 presented its declaration of waiver of the requirements indicated in Article 29, paragraph 2, of the Treaty of Tlatelolco.
Guyana signed a Nuclear Safeguards Agreement with the International Atomic Energy Agency (IAEA) on April 9, 1997, in accordance with Article 13 of the Treaty of Tlatelolco.
Guyana acceded to the Treaty on the Non-Proliferation of Nuclear Weapons (NPT) on October 19, 1993 in Washington.
Guyana signed the Comprehensive Nuclear Test Ban Treaty (CTBT) on September 7, 2000 and ratified it on March 7, 2001.
Guyana signed the Treaty on the Prohibition of Nuclear Weapons (TPAN) on September 20, 2017 and ratified it on the same date.
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