Status of Signature and Ratification 33 Total States | 33 Total Signed | 33 Total Ratified | 0 Not Signed | 0 Not Ratified Latest State Signatory: Peru 25-Sep-1996 Latest Ratifying State: Colombia 29-Jan-2008 Region State Signature Date Ratification Date Latin America and the Caribbean Argentina 24-Sep-1996 04-Dec-1998 Latin America and the Caribbean Brazil 24-Sep-1996 24-Jul-1998 Latin America and the Caribbean Chile 24-Sep-1996 12-Jul-2000 Latin America and the Caribbean Colombia 24-Sep-1996 29-Jan-2008 Latin America and the Caribbean Mexico 24-Sep-1996 05-Oct-1999 Latin America and the Caribbean Peru 25-Sep-1996 12-Nov-1997 (-) Annex 2 States Only CTBT State Signatories CTBT Ratifying States Africa Eastern Europe (-) Latin America and the Caribbean Middle East and South Asia North America and Western Europe South-East Asia, Pacific & Far East