Preventing a Resumption of Nuclear Testing

September 2024
By Lynn Rusten

For 32 years, under Republican and Democratic administrations, the United States has observed a moratorium on explosive nuclear weapons testing. U.S. leadership prompted other countries to cease 
testing and to complete negotiation of the Comprehensive Test Ban Treaty (CTBT) in 1996.

Today, the national security, environmental, and humanitarian benefits of what has become a global moratorium are indisputable. The five states recognized as nuclear-weapon states under the nuclear Nonproliferation Treaty (NPT) have been observing a moratorium on nuclear testing since 1996 (1990 for the Soviet Union/Russia, 1991 for the United Kingdom, 1992 for the United States, and 1996 for China and France).

Of the world’s nine nuclear-armed states, only North Korea has tested since 1998. Between 1945 and the mid-1990s, there were approximately 2,000 explosive nuclear tests worldwide, with more than 500 tests conducted aboveground or underwater. The devasting environmental and health consequences of these tests for private citizens and veterans persist to this day, including in the United States.¹

For these and other reasons, a resumption of nuclear testing would face widespread opposition in the United States and globally. Yet, some, including the former national security adviser to President Donald Trump, are suggesting that the United States do just that.²

Fortunately, there is an alternative. The United States relies on the Stockpile Stewardship Program (SSP), which uses science-based assessments of nuclear weapons to ensure confidence in the safety, reliability, and effectiveness of its nuclear stockpile without the need for explosive nuclear testing. This program has proven remarkably successful.³ Every U.S. president since Bill Clinton has determined through the SSP that resuming explosive nuclear testing is scientifically and technically unnecessary, based on the assessment and certification by the directors of the national weapons laboratories.

A return to testing for any other reason, such as to develop new nuclear weapons or create negotiating leverage with Russia or China, would be extremely shortsighted. If the United States were to resume testing, a cascade of other states—Russia, perhaps China, and more—likely would follow suit, and proliferation pressures could grow on states that currently do not have nuclear weapons but might seek them.

The United States has the most to lose from a multilateral resumption of nuclear testing because of the high confidence in its stockpile provided by the SSP without testing. Other states may think they have more to gain by developing and testing new weapon types, but this too would be shortsighted.

A return to testing, particularly by any of the five NPT nuclear-weapon states, also risks unraveling the global nuclear nonproliferation regime. The commitment to conclude a test ban treaty was central to achieving the indefinite extension of the NPT in 1995. A return to nuclear testing would seriously erode the credibility of the nuclear-weapon states’ commitment to the NPT and their obligation to work toward nuclear disarmament. It also would exacerbate mounting frustrations among the non-nuclear-weapon states.

The next president should recognize the national security benefits of upholding the U.S. moratorium on explosive nuclear testing and encouraging all nuclear-armed states to maintain their moratoriums on nuclear testing. Beyond that, the president should advance the longer-term goal of U.S. ratification of the CTBT and work with other states to bring the treaty into force. The alternative, a resumption of nuclear testing in their backyards and beyond, will never be welcomed by the American people or the international community.

ENDNOTES

1. “Downwinders and the Radioactive West,” PBS, October 3, 2022, https://www.pbs.org/video/downwinders-and-the-radioactive-west-usugap/; Morgan Knibbe, “The Atomic Soldiers,” The New York Times, February 12, 2019.

2. Robert C. O’Brien, “The Return of Peace Through Strength: Making the Case for Trump’s Foreign Policy,” Foreign Affairs, Vol. 103, No. 4 (July/August 2024), https://www.foreignaffairs.com/united-states/return-peace-strength-trump-obrien.

3. “Managing an Arsenal Without Nuclear Testing: An Interview With Jill Hruby of the U.S. National Nuclear Security Administration,” Arms Control Today, Vol. 53, No. 10 (December 2023): 14-18.

Lynn Rusten is vice president for the Global Nuclear Policy Program at the Nuclear Threat Initiative.