Russia has refused to reschedule a key meeting with U.S. nuclear negotiators that it canceled in November, a U.S. diplomat said on Tuesday, further delaying efforts to replace an expiring nuclear ...

Russia’s refusal to allow on-the-ground inspections to resume is endangering the New START nuclear treaty and U.S.-Russian arms control overall, the Biden administration ...

The treaty allows five of them—the United States, the United Kingdom, Russia, China, and France—to possess nuclear weapons. But it also requires those five to pursue full nuclear disarmament.

By Michael Callahan, Jennifer Hansler, Haley Britzky and Kylie Atwood, CNN Russia is violating a key nuclear arms control agreement with the United States and continuing to refuse to allow inspections ...

(Photo by Galerie Bilderwelt via Getty Images) One of the more likely scenarios discussed is Russia firing a so-called tactical nuclear ... the United States committing unilaterally to disarmament ...

Bai Xueqi/Xinhua via Getty Images(WASHINGTON) -- The State Department has informed Congress that Russia is no longer meeting ...

Gottemoeller had been involved in nuclear disarmament talks with Russia. She said that mutual predictability between the United States and China will be necessary. But she added that it is ...

Risks to non-proliferation were dealt a blow as talks ... Nuclear Weapon-Free Zone. Meanwhile, Russia has backtracked somewhat from its nuclear threats, avoiding further escalation and affording ...

an effort to harness the power of nuclear fusion to unleash vast amounts of clean energy — continues to purr along with the participation of Russian scientists and Russian technology. Earlier this ...

17:59 (IST) Jan 19 A meeting of around 50 countries has been convened by the United States ... Russia. 17:54 (IST) Jan 19 European Union chairman, Charles Michel, arrived in Kyiv on Thursday for ...

North Korea’s spike in missile testing and development of its nuclear program has prompted South Korea to re-evaluate its defense capabilities, including the potential development of a nuclear ...

The Nuclear Non-Proliferation Treaty, which has served as the norm for promoting nuclear disarmament and preventing ... Only five countries--the United States, Russia, Britain, France and China ...