President Donald Trump issued a rare threat of nuclear escalation on Friday, saying he had ordered two nuclear submarines to be strategically positioned near Russia in response to what he said were aggressive remarks by Dmitry Medvedev,

After trading barbs online with former Russian leader Dmitri A. Medvedev, President Donald Trump has ordered nuclear submarines to be positioned in “the appropriate regions” near Russia “just in case.”

President Donald Trump said he's ordered two nuclear submarines to move in the "appropriate regions" in response to recent comments from Russia's Dmitry Medvedev.