US President Donald Trump has rejected a proposal from Russian President Vladimir Putin to voluntarily continue observing limits on strategic nuclear weapons following the expiration of the landmark ...

The U.S. on Friday called for a new, broader nuclear arms control treaty with China and Russia after it accused Beijing of conducting a secret nuclear test. “China has conducted nuclear explosive ...

To address the stated concerns in Moscow and Washington, a multilateral pact would be required, a process that experts say could be exceedingly tricky.

Add Yahoo as a preferred source to see more of our stories on Google. The United States and Russia are entering a new phase of nuclear relations with no treaty limiting their arsenals, as President ...

WASHINGTON -- A senior US State Department official has flatly rejected suggestions that Washington and Moscow are informally continuing to observe the limits of the now-expired, ...

Add Yahoo as a preferred source to see more of our stories on Google. The U.S. on Friday called for a new, broader nuclear arms control treaty with China and Russia after it accused Beijing of ...