W. Bush signed the nuclear testing moratorium enacted by Congress, which remains in place to this day.

WHITEHOUSE: VP Biden: The Path to Nuclear Security

In 1996, China pledged to refrain from further assistance to Pakistan's unsafeguarded nuclear facilities, adopted a nuclear testing moratorium, signed the comprehensive nuclear test ban and ratified the Chemical Weapons Convention.

CENTERFORSECURITYPOLICY: Center For Security Policy

In fact, as former assistant secretary of defense Frank Gaffney points out, the North Korean nuclear program reached its frantic climactic stage precisely during the current American moratorium on nuclear testing.

CENTERFORSECURITYPOLICY: Test-Ban Trap

The most dominating "fact of life" in the U.S. nuclear weapons world today is the continued existence of a moratorium on underground nuclear testing.

CENTERFORSECURITYPOLICY: A Different Approach to the 2005 NPT Conference

Ike launched a unilateral moratorium on nuclear testing before negotiations on a test-ban treaty.

ECONOMIST: Rock-solid allies? No. But certainly enemies no longer

In 1992, the United States adopted a moratorium on nuclear testing, thus precluding the most rigorous and reliable means of establishing the susceptibility of electronic systems to electromagnetic effects.

CENTERFORSECURITYPOLICY: The terror next time

The U.S. military, which used to pay serious attention to the question, largely stopped doing so after a moratorium was imposed in 1992 on all nuclear testing (including that done for EMP effects).

CENTERFORSECURITYPOLICY: The Blackout Next Time

Under the moratorium, our laboratories have maintained our arsenal through the Stockpile Stewardship Program without underground nuclear testing, using techniques that are as successful as they are cutting edge.

WHITEHOUSE: VP Biden: The Path to Nuclear Security