A Russian official said Moscow is ready to respond with military measures if the United States deploys its missile defense ...

For the first time in over half a century, the US and Russia have no legally binding agreement limiting their strategic ...

A nuclear treaty first signed in 2010 is expiring this week. If it's not replaced, experts say a global arms race could be in ...

In Focus delivers deeper coverage of the political, cultural, and ideological issues shaping America. Published daily by senior writers and experts, these in-depth pieces go beyond the headlines to ...

Beijing, Moscow and shaken American allies are seeking new warheads as President Trump ends more than a half century of ...

The expiration of the last remaining nuclear treaty between the United States and Russia on Thursday has sparked fears about ...

The last remaining nuclear arms pact between Russia and the United States is set to expire this week, removing any caps on ...

Iran-US tensions highlights: While it is not known what Iran's secretary of the Supreme National Security Council and Putin ...

The risks of this stand-off have been contained over the years by various arms-control agreements, most recently New START. But that treaty expired this week, with no replacement. To make matters more ...

Russian and U.S. nuclear arsenals could expand for the first time in three decades.

The announcement by Iranian Foreign Minister Abbas Araghchi on Wednesday came after hours of indications that the anticipated ...