Areas of expertise : nuclear proliferation, arms control, US defense and foreign policy, nuclear security 

Brief Background and Contributions to UNIDIR

Before joining UNIDIR, Ryan was a visiting research fellow with the Arms Control Association where he focused on the intercontinental ballistic missile (ICBM) modernization debate, assisting with briefings to Congressional staff and think tanks in Washington, DC and the feasibility of removing the ICBM force Altogether. He completed a postdoc at Princeton University's Program on Science and Global Security where he worked on the proliferation of laser isotope separation and multinational uranium enrichment in the Middle East. Ryan has a Ph.D. in nuclear physics from the University of Virginia and a BA in physics from Kenyon College.

Recent Publications and Current Projects

• Evidence of Absence: Verifying the Removal of Nuclear Weapons , Podvig, Pavel, Snyder, Ryan and Wan, Wilfred (UNIDIR, 2018)
• The Future of the ICBM Force: Should the Least Valuable Leg of the Triad be Replaced? (Policy White Paper, Arms Control Association, 2018)
• Iran, Uranium, and Future Proliferation Dynamics in the Middle East , Snyder, Ryan in Ahmad, Ali (ed.) Energy Transitions in the Gulf: Key Questions on Nuclear Power (Gulf Research Center Cambridge, 2018)
•  Multinational uranium enrichment in the Middle East , Ahmad Ali, Salahieh, Sidra and Snyder, Ryan, Energy Policy 106 , 2017