A mushroom cloud rises above Fangataufa Lagoon, French Pacific Possessions, following detonation of France's first hydrogen bomb, August 24, 1968.
Sixty years after President Harry Truman called for an end to the use of atomic weapons, arms control efforts continue. How did we get where we are today? Talk of the Nation examines the issue in a live broadcast before a studio audience at the Ronald Reagan Building in Washington, D.C.
Ambassador Linton Brooks, administrator of the National Nuclear Security Administration
Sen. Richard Lugar (R-IN), chairman of the Foreign Relations Committee
Former Sen. Sam Nunn (D-GA), co-chairman and chief executive officer of the Nuclear Threat Initiative (NTI).