At the summit, the United States will sign accords on enhanced verification procedures sought by the Reagan Administration for the Threshold Test Ban Treaty and the Peaceful Nuclear Explosions Treaty of the 1970s as prerequisites to ratification by the U.S. Congress.

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But unlike the current version of the Comprehensive Test Ban Treaty, the ban was confined to tests above a specific threshold that was verifiable and allowed a limited number of proof-tests of existing stockpiles to determine their reliability.

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