Beijing has said its nuclear capabilities are maintained at the minimum level required for national security.

Trump’s message at the end of last month is that the U.S. is no longer willing to ignore obvious dangers, especially if China poses them.

Hydronuclear experiments, barred globally since the 1990s, may lie behind President Trump’s call last month for the United ...

The U.S. and Russia have both recently threatened to resume nuclear testing, alarming the international community and ...