His comments came after Russia disclosed the test of its long-range nuclear-powered cruise missile. It's the second time in a matter of months that Trump brought up submarines in response to Russia.

Significant activity on Russia's Novaya Zemlya archipelago indicates an impending test of the nuclear-powered Burevestnik cruise missile, known as Skyfall by NATO. The Burevestnik, a complex system ...

-Analysts have identified extensive activity at a remote Arctic test site for the Burevestnik missile, a weapon Putin once called "invincible." -However, the missile has a notoriously poor test record ...

Russia says it has successfully tested an experimental weapon that sounds like something out of a sci-fi movie: a nuclear-powered cruise missile with unlimited range, whose low-flying, terrain-hugging ...