a series of head-of-state level summits on nuclear disarmament modeled on the Nuclear Security Summits process, which saw the elimination of the equivalent of 3,000 nuclear weapons. (5) The President should seek ratification by the Senate of the CTBT and mobilize all countries covered by Annex 2 of the CTBT to pursue similar action to hasten entry into force of the CTBT. The entry into force of the CTBT, for which ratification by the United States will provide critical momentum, will activate the CTBT’s onsite inspection provision to investigate allegations that any country that is a party to the CTBT has conducted a nuclear test of any yield. (6) The President should make the accession of North Korea to the CTBT a component of any final agreement in fulfilling the pledges the Government of North Korea made in Singapore, as North Korea is reportedly the only country to have conducted a nuclear explosive test since 1998. (7) The United States should— (A) refrain from developing any new designs for nuclear warheads or bombs, but especially designs that could add a level of technical uncertainty into the United States stockpile and thus renew calls to resume nuclear explosive testing in order to test that new design