EMMA BELCHER, research fellow with the Belfer Center's International Security Program/Project on Managing the Atom, speaks on "Taking the Initiative: A Practical Mechanism to Prevent WMD Proliferation" at a brown bag seminar. Belcher is a Ph.D. Candidate at the Fletcher School of Law and Diplomacy at Tufts University. Also pictured: ONDREJ DITRYCH, research fellow with the International Security Program. (February 21, 2008)