The final pillar of a once-robust set of arms control treaties between the U.S. and Russia expires in six months.

Satellite images suggest Putin is preparing to test an ‘invincible’ nuclear missile – as he enters crunch talks with Trump on ...

President Trump is raking up global support in his push for a Nobel Peace Prize — garnering nominations from Pakistan, ...

In an ever more dangerous world the focus should be on how we can limit, not increase, the risk of major nuclear conflicts.

A sudden feud, an impasse or a first step toward a cease-fire are all possible at the summit in Alaska as the two leaders navigate thorny issues such as Ukraine’s territory and NATO expansion.

Iran has insisted on its “right,” under the Non-Proliferation Treaty to make nuclear fuel, and the United States and other nations have allowed that such a “right" exists. But the treaty mentions no ...

President Donald Trump is set to meet with Russian President Vladimir Putin for a historic summit Friday in Alaska.

Russian President Vladimir Putin said on the eve of a summit with U.S. President Donald Trump that their countries might ...

In the decades since Project Pluto’s cancellation, the Russians have taken the core idea as their own—and unlike the Americans, do not appear concerned about the ethical quandaries it presents.

A longtime practitioner of multilateral nuclear diplomacy explains how divergent views about the Nuclear Non-Proliferation Treaty are often due to an incomplete understanding of the treaty—and must be ...