WASHINGTON (Reuters) -U.S. President Donald Trump on Friday said he had ordered two nuclear submarines to be positioned in "the appropriate regions" in response to remarks from former Russian President Dmitry Medvedev about the risk of war between the nuclear-armed adversaries.

Donald Trump escalated tensions with Russia by ordering two U.S. nuclear submarines to reposition themselves near Russian waters.

In a warning to Russia, President Donald Trump said Friday he's ordering the repositioning of two U.S. nuclear submarines “based on the highly provocative statements” of the country's former president,