Analysis / CommentaryWhat Do the Israeli Strikes Mean for Iran’s Nuclear Program?ByHeather Williams, Doreen Horschig and Bailey SchiffPublished Jun 18, 2025Israel launched an unprecedented attack on Iran’s nuclear and military sites. The future of Iran’s program and regional proliferation risks will depend on the success of Israel’s campaign, the international response, and Tehran’s perceived need for nuclear weapons.
Analysis / CommentaryRevising Missile Controls Is Necessary to Help Allies and Prevent New Nuclear StatesByPranay Vaddi and Ola CraftPublished May 6, 2025Trump’s defense agenda could benefit from the Biden administration’s final MTCR reforms, which align with Trump’s goals to strengthen the U.S. industrial base while building allied capabilities, deterring adversaries, and preventing nuclear proliferation.
Analysis / Next Gen CommunityAmerica First, Allies, and Adversaries: Balancing Arms Control and Nonproliferation ByLachlan Mackenzie and Catherine MurphyPublished May 1, 2025President Trump appears willing to make significant concessions on regional security issues—potentially including support for key partners—to bring adversaries to the negotiating table. Three areas of U.S. policy will influence whether this approach raises the risks of allied proliferation: the administration’s approach to nuclear modernization, extended deterrence, and security concessions.
Analysis / Next Gen CommunityEmbracing Irreversibility Amid NPT Diplomatic Deadlock: A Quest for African States to Seek Innovative SolutionsByKudakwashe MapakoPublished Apr 30, 2025This commentary highlights African States’ conception of irreversibility and associated reservations, how to achieve and maintain irreversibility, and the incentives for African States to embrace irreversibility ahead of the 2026 NPT Review Conference and beyond.
Analysis / Next Gen CommunityDespite Progress in Talks, the Threat of a Nuclear Iran LoomsBySyed Ali Zia JafferyPublished Apr 24, 2025While the ongoing Oman process between the U.S. and Iran is a positive development, the threat of Iran’s nuclearization still looms. There are three reasons why this is the case. First, the trust deficit between the two parties is hard to mitigate. Iran remembers Trump’s first term and his approach toward the Iran nuclear deal in particular and Iran in general. Second, Trump’s threats of military coercion will make Iran more vulnerable, with hardliners, including Ali Khamenei, likely to see nuclear weapons as their best deterrent. Third, the disintegration of its Axis of Resistance has left it with no other option but to get a deterrent of its own. All of this means that jingoism must give way to prudence and deft diplomacy.
Analysis / CommentaryCSIS European Trilateral Track 2 Nuclear DialoguesByHeather WilliamsPublished Apr 9, 2025Political shifts and a rapidly changing security environment continue to reinforce the importance of close collaboration and unity between the United States, the United Kingdom, and France as responsible nuclear weapons states and NATO alliance members.
Analysis / CommentaryReviving Chemical Weapons Accountability in a Multipolar WorldByDoreen Horschig and Natasha HallPublished Nov 25, 2024Next week’s 29th Session of the Conference of States Parties of the Organization for the Prohibition of Chemical Weapons is an opportunity to revitalize accountability and global cooperation in an age of impunity.
Analysis / CommentaryWhy Striking Iranian Nuclear Facilities Is a Bad IdeaByDoreen HorschigPublished Oct 31, 2024Israeli military strikes on Iran’s nuclear facilities could escalate tensions and push Tehran further towards nuclear weapons development. Diplomacy, although slow, remains the only viable way to curb Iran’s nuclear ambitions.
Analysis / Next Gen CommunityA Choice of Nuclear Futures in Space ByLuke WidenhousePublished Sep 30, 2024In February, it was revealed that Russia has been developing a nuclear-armed anti-satellite (ASAT) weapon. Officials quickly issued reassurances that the technology had not been deployed and that it did not pose an imminent danger. While it is still not publicly known how far Russia is in the development of this capability, the news nevertheless underscores that trends are pointing to a future in space that is nuclear. But whether this future will involve the weaponized use of nuclear power in space remains an open question. As the United States seeks to curtail the proliferation of nuclear weapons in space, it must do so with a clear vision for the sort of nuclear future it would like to see in space. This article examines three possible such futures and the questions on arms control, nonproliferation, and extended nuclear deterrence that arise from them.
Analysis / ReportHouse of Cards? Nuclear Norms in an Era of Strategic CompetitionByHeather Williams and Doreen HorschigPublished Jul 31, 2024While the norms against nuclear proliferation, use, and testing are widely supported and critical for stability, they are increasingly contested. The fragile interconnectedness of the norms urges global action to reinforce these pillars and prevent a destabilizing cascade.