Robert J. Goldston is a professor of Astrophysical Sciences at Princeton University. He was the director of the US Energy Department’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. In fusion research his recent focus has been on the physics of the plasma edge and means to mitigate high heat fluxes to material surfaces. In arms control he works on means to verify warheads for dismantlement, and in non-proliferation he works on means to safeguard gas-centrifuge enrichment plants.