David Cortright
David Cortright is director of policy studies at Notre Dame's Kroc Institute for International Peace Studies and author, most recently, of Towards Nuclear Zero (with Raimo Väyrynen).
The war we aren't winning
The United States has been engaged for decades in a seemingly endless series of wars and military operations.
Although nuclear arsenals have declined, the risk that nuclear weapons might be used is arguably greater now than it was during the cold war.
The New START treaty between the U.S. and Russia lowers the number of permitted nuclear warheads by approximately 30 percent. That is still too many, but it is an important step.