Ted Koppel, NPR senior news analyst; former anchor, ABC News Nightline
Sharon Squassoni, senior associate, Nuclear Policy Program at the Carnegie Endowment for International Peace
Tom Donnelly, resident fellow and director, Center for Defense Studies at the American Enterprise Institute for Public Policy Research
The Obama administration has unveiled the plan to revamp the United States' approach to nuclear weapons. The Nuclear Posture Review took a year to draft, and in what's being presented as a break from the past, the guidelines pledge that the U.S. will not use, or threaten to use, nuclear weapons against non-nuclear states.