There are nine Annex 2 States that have yet to ratify the Treaty - China, Egypt, Indonesia, Iran, Israel, and the United States of America, which have signed the Treaty, and North Korea, India, and Pakistan, which have not signed.
Progress Toward Ratification
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President Obama announced his intention to pursue U.S. ratification of the CTBT in April 2009.
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In May 2010, Indonesia announced its support for the CTBT and is currently pursuing ratification in its legislature.