Berkley Center

Rev. Andrew (Drew) Christiansen, S.J., was Distinguished Professor of Ethics and Human Development in Georgetown’s School of Foreign Service and a senior fellow at the Berkley Center for Religion, Peace, and World Affairs from 2013 until his death in April 2022. His areas of research included nuclear disarmament, nonviolence and just peacemaking, Catholic social teaching, and ecumenical public advocacy. He was a frequent consultant to the Holy See and a member of the steering committee of the Catholic Peacebuilding Network. He also served on the Atlantic Council's Middle East Task Force and on the Holy See delegation that participated in the negotiation of the Treaty on the Prohibition of Nuclear Weapons during summer 2017.

Kelsey Davenport is the director for nonproliferation policy at the Arms Control Association and a board member at the Kroc Institute at the University of Notre Dame. Prior to this, Davenport worked at the Israel Palestine Center for Research and Information, where she researched regional security issues and diplomacy among non-state actors. She regularly provides commentary for CNN, BBC, Fox News, MSNBC, NPR, and Al Jazeera. 

John J. DeGioia is the forty-eighth president of Georgetown University. For nearly four decades, DeGioia has worked to define and strengthen Georgetown University as a premier institution for education and research. As the first lay president of a Jesuit university he places emphasis on sustaining and strengthening Georgetown’s Catholic and Jesuit identity and its responsibility to serve as a voice and an instrument for justice. He has also been an advocate for interreligious dialogue. He continues to teach an Ignatius Seminar each fall, part of a program offering first year students the opportunity to encounter unique courses of study inspired by the Jesuit educational theme of cura personalis (“care for the whole person”). He is a member of the Order of Malta, a lay religious order of the Roman Catholic Church dedicated to serving the sick and the poor. Before becoming president, DeGioia served at Georgetown as senior vice president, responsible for university-wide operations, and dean of student affairs. DeGioia earned his B.A. and Ph.D at Georgetown University.

Joan Rohlfing is president and chief operating officer of the Nuclear Threat Initiative (NTI). She served nine years as NTI's senior vice president for programs and operations, and was part of the original team that created the mission and scope for NTI in 2000. Rohlfing is a member of the Threat Reduction Advisory Committee (TRAC) of the United States Department of Defense, and chair of the Directorate Advisory Committee (DAC) of the National Security Directorate at Pacific Northwest National Laboratory (PNNL).

James Timbie is an Annenberg Distinguished Visiting Fellow at the Hoover Institution of Stanford University. As a U.S. State Department senior advisor (1983-2016) he played a central role in the negotiation of the INF and START nuclear arms reductions agreements, the purchase from Russia of enriched uranium extracted from dismantled nuclear weapons for electricity production in the United States, and the establishment of an international enriched uranium fuel bank. Most recently he was the lead United States expert in the negotiation of the nuclear agreement with Iran.