Add Yahoo as a preferred source to see more of our stories on Google. The last remaining nuclear arms control treaty between the United States and Russia is set to expire Thursday, leaving the world ...

Shortly before lunchtime on Oct 30 1961, a Soviet plane flying above the Arctic archipelago of Novaya Zemlya dropped the most powerful nuclear bomb ever created. The USSR’s “emperor bomb” was 3,000 ...

The last major nuclear arms control treaty between Russia and the United States expires Thursday, ushering in an era without caps set by the world’s largest nuclear powers. Without the New START ...

NPR's Mary Louise Kelly speaks with Christine E. Wormuth of the Nuclear Threat Initiative about the state of a potential nuclear arms race now that the current nuclear-arms-control treaty has expired.

As the last major nuclear arms treaty between the United States and Russia expires this week, we speak with arms control expert Dr. Ira Helfand, a steering committee member of Back from the Brink, a ...

In the bleakest days of the Cold War, there was a terrifying yet oddly reassuring logic to the nuclear standoff between the United States and the Soviet Union. The two superpowers were constrained by ...

The last remaining nuclear arms control treaty between the United States and Russia is set to expire Thursday, leaving the world without a significant nuclear agreement between the two superpowers for ...