Iran may not have a nuclear weapon—but it controls the Strait of Hormuz. Here’s why this narrow waterway could become ...

The expiration of the New START treaty has the US and Russia poised to increase the number of their deployed strategic ...

The last nuclear arms agreement between Russia and the United States expired on Feb. 5. For the first time since 1972, the world’s two most powerful nuclear countries have no limits on the deployment ...

Within hours of the expiration last week of the final arms control treaty between Moscow and Washington, the State Department sent its top arms diplomat, Thomas G. DiNanno, to Geneva to lay out ...