Russia has repeatedly struck Ukraine's energy infrastructure, risking a nuclear disaster.

Beijing urged the U.S. and Russia to act soon, saying the global nuclear order was on the line.

Russia has issued a chilling nuclear warning following the expiration of the New START treaty on February 5 ...

At its current production rates, China is likely to have a far more menacing submarine force than Russia in short order—though its quality is still uncertain.

The Iranian leader who slammed President Donald Trump just days ago said Tuesday that his country is now pursing "fair and equitable negotiations." ...

After Russian missile strikes knocked out power to multiple nuclear facilities in Ukraine, including Chernobyl, the International Atomic Energy Agency (IAEA) released an urgent safety warning. Nuclear ...