Nuclear Issues

The risks of nuclear escalation between the U.S. and China or Russia are greater than ever given the possibility of misinterpreted cyber espionage and military strikes against early warning systems. What can be done to reduce this risk?

On October 11, 2018, Harvard Kennedy School Professor of Practice Matthew Bunn presented "For Security's Sake: Saving U.S.-Russian Nuclear Arms Control" at Oak Ridge National Laboratory.

Today, both Russia and the United States are modernizing their nuclear forces to keep these threats robust for decades to come — though their forces’ total numbers are limited by treaties (thank goodness). The U.S. program is expected to cost $1.2 trillion over 30 years, and the Trump administration has added new, smaller nuclear weapons that critics warn might seem more usable should war come. Russia’s program includes entirely new types of strategic weapons, from an intercontinental torpedo designed to blow up U.S. coastal cities to a nuclear-powered and nuclear-armed cruise missile.

The July 16 summit in Helsinki between Presidents Donald Trump and Vladimir Putin presents a unique opportunity to reverse the dangerous nuclear competition between the United States and Russia and should be welcomed, despite its inherent risks. The opportunity to stabilize U.S.-Russian nuclear relations by extending New START, a key nuclear treaty that is set to expire in 2021, is paramount and worth the issues that come with any meeting between Trump and Putin.

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 authors offer three insights from Ukraine's path to denuclearization that may help deal with today’s proliferation challenges.

Nuclear deterrence thinking has become so entrenched in U.S. academic and policy circles that it only seems natural that other states regard nuclear weapons in the same terms. Yet is it necessarily so? In this working paper, Polina Sinovets and Mariana Budjeryn examine the case of Ukraine to understand how its leaders interpreted the value of the nuclear weapons deployed on Ukrainian territory in 1990–1994.