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

After Russian missile strikes knocked out power to multiple nuclear facilities in Ukraine, including Chernobyl, the ...

The former U.S. president has warned that the expiration of the New START treaty would "wipe out decades of diplomacy." ...

Global alarm is growing after the last remaining nuclear arms control treaty between the United States and Russia officially ...

"It is the use of nuclear risk as a tool of coercion," Ukraine's foreign minister said.

The comments follow the recent expiration of an important nuclear arms treaty.

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.