Nuclear Issues

The author analyzes the policy implications of the U.S. January 2019 Missile Defense Review.

This Policy Brief compares and contrasts the Trump administration’s 2018 Nuclear Posture Review with past reviews and its Obama predecessor. It concludes that this review offers a much harsher assessment of the security environment; it posits a more expansive role for nuclear weapons; and proposes a substantial de-emphasis on arms control.

The best way to address the various challenges associated with Iranian behavior—meaning the one most likely to succeed and to bolster long-term U.S. security interests—is to preserve and build on the nuclear deal. Doing so would enable Iran to reconsider the lessons of the Iran-Iraq War, which taught it that it cannot trust the international organizations and world powers that seek to isolate it and undermine its security.

The historical record does not support the idea that nuclear energy programs increase the odds of proliferation.

This policy brief is based on “The New Era of Counterforce: Technological Change and the Future of Nuclear Deterrence,” which appears in the spring 2017 issue of International Security.

Olli Heinonen Briefing at the Open Debate of the United Nations Security Council in New York, NY on February 13, 2017.

In a televised speech on January 1, Iranian President Hassan Rouhani said that Tehran had imported 200 metric tons of yellowcake uranium and would import another 120 tons at an unspecified future date. The imports are permitted by the nuclear deal, the Joint Comprehensive Plan of Action (JCPOA), but nonetheless significantly exceed Iran’s needs for natural (that is, unenriched) uranium over the next 15 years. Iran’s import of such high levels of uranium suggests it may be stockpiling uranium to reach nuclear breakout before the deal’s initial limitations expire in 2031.

The JCPOA permits Iran to buy natural uranium to “replenish” its stocks as it sells enriched uranium on the international market. To date, Iran has had difficulties locating a buyer for its enriched uranium stocks – unsurprising, given the current excess of commercially available enriched uranium. This, however, has not stopped Iran from buying and stockpiling more yellowcake.

William H. Tobey reviews the motivations, strengths, and weaknesses of the nuclear security summits and provides recommendations for how governments can maintain momentum and awareness now that the summit process is over. He concludes that some of the innovations from the process will continue to be useful tools.

This policy brief is based on "Should the United States Reject MAD? Damage Limitation and U.S. Nuclear Strategy toward China" which will appear in the summer 2016 issue of International Security.

The constraints imposed on Iran’s activities under the Joint Comprehensive Plan of Action (JCPOA) curb Tehran’s nuclear program for eight to 15 years. The key restrictions on the program, however, disappear over time, leaving Tehran with an industrial-size nuclear program with near-zero nuclear breakout time and an easier, advance-centrifuge-powered clandestine “sneak out” time.