The Korean government is moving forward with plans to develop and build nuclear-powered submarines — a project widely ...

Questions have arisen after Russian President Vladimir Putin said his country tested two nuclear-capable weapons this week.

During a visit to a military hospital on Wednesday, Putin told reporters that his military has also tested an unmanned ...

Trump’s announcement was short on detail but came a day after he finalized a trade deal with South Korea that includes a ...

When Chinese leader Xi Jinping inserted a reference to “twists and turns” in his relationship with President Donald Trump in the opening remarks of their summit this week, he could hardly have ...

But President Donald Trump ’s back-to-back announcements about nuclear testing and nuclear submarines on Oct. 29 during his ...

Russia said it tested a nuclear-powered cruise missile and torpedo, two of its experimental weapons, in recent days.

Russian President Vladimir Putin, speaking earlier during a meeting with veterans of the special military operation, announced the successful testing of the Poseidon nuclear-powered, unmanned underwat ...

According to news reports, a Cyprus-based company bought advanced sonar detection equipment from the West—then transferred it to Russia for use in the Arctic.

The United States will share closely held technology to allow South Korea to build a nuclear-powered submarine ...

There has been renewed focus on nuclear arsenals after Russia’s invasion of Ukraine, James C. Reynolds and Maryam ...

The president cited Russia's recent missile tests and China's growing nuclear capabilities as the reasons behind his latest ...