P resident Donald Trump said on Friday he's ordered two nuclear submarines to move to the "appropriate regions" in response to what he called "highly provocative statements" from the deputy chair of Russia's security council, Dmitry Medvedev.

Viktor Vodolatsky hit back at Trump's recent announcement about moving two U.S. nuclear submarines, saying his country has better ones.

Russia and China are staging mock combat drills and other war games in the Sea of Japan in a sign of strengthening military ties.