Kasia Mendelsohn is the Acting Deputy Administrator for Defense Nuclear Nonproliferation (DNN). Prior to this, she served as the Principal Assistant Deputy Administrator for DNN.
Ms. Mendelsohn has served in DOE/NNSA since 1999 in a variety of capacities, including as the Assistant Deputy Administrator for Nonproliferation and Arms Control.
Much of Ms. Mendelsohn’s career has focused on addressing urgent national security issues, including by countering the growth of plutonium and highly enriched uranium stockpiles, strengthening multilateral nonproliferation treaties and agreements, and enhancing international nuclear safeguards and security of nuclear materials and facilities worldwide.
Ms. Mendelsohn holds a bachelor’s degree in political science from Barnard College and a master’s degree in international security policy from Columbia University’s School of International and Public Affairs.