| Status of CTBT Signatures and Ratification Thema1 #100102 As of April 2011, 182 nations have signed the Comprehensive Nuclear Test-Ban Treaty (CTBT), and 153 have ratified it. Of the 44 States whose deposit of instruments of ratification are specifically required by the CTBT for its entry into force, 41 have signed the Treaty and 35 have ratified it. |
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