Add Yahoo as a preferred source to see more of our stories on Google. The US and Russia have agreed to re-establish high-level military dialogue for the first time in more than four years in another sign of warming relations between the two countries since US President Donald Trump returned to the Oval Office.

President Donald Trump, Defense Secretary Pete Hegseth and Joint Chiefs Chairman Gen. Dan Caine address the news media at Trump's Mar-a-Lago Club in Palm Beach, Florida, in January.