The U.S. Navy carried out four scheduled unarmed missile tests of the Trident II D5LE off the coast of Florida last week.

MOSCOW (Reuters) -A top Russian diplomat said on Wednesday that Russia would swiftly carry out a nuclear test if the United ...

Russian Deputy Foreign Minister Sergey Ryabkov warned that the country will retaliate if U.S. nuclear tests resume.

People are being reminded to "not take action" over nuclear emergency text messages which could be sent to some residents on ...

Messages for emergency systems linked to a nuclear power plant near the Channel Islands are set to be sent out during a test. The States of Alderney said officials in the French department of Manche ...

Duke Energy will conduct a full-volume test of outdoor warning sirens around the Catawba and McGuire nuclear stations on ...

Vladimir Putin warned that Russia would conduct a nuclear test if another power did, citing signs of preparations from some ...

In an unprecedented move, Russia deliberately broke the connection between the occupied Zaporizhzhia Nuclear Power Plant (ZNPP) and the Ukrainian power grid to test its integration into the Russian ...

BEIJING-- Research by Chinese geologists suggests that the mountain above North Korea's main nuclear test site has likely collapsed. That collapse has likely rendered the site unsafe for further ...

President Vladimir Putin said on Friday that Russia was developing new strategic weapons and it would not be critical for ...