Robert J. Goldston is a professor of Astrophysical Sciences at Princeton University. He was the director of the US Department of Energy’s Princeton Plasma Physics Laboratory from 1997 to 2009. He is an active researcher both on fusion energy and on arms control and non-proliferation. He is a co-developer of the “Zero Knowledge” protocol for warhead verification and is working on advanced safeguards for gas centrifuge enrichment plants. He is associated faculty with Princeton University’s Woodrow Wilson School Program on Science and Global Security.