Article continues below advertisementDonald Trump met with British Prime Minister Keir Starmer on Thursday, September 18, in the U.K., and though the two eventually signed a deal, a body language expert claimed the U.S. president seemed more reserved than his normal self.Inbaal Honigman noted there were "differences" in the men's demeanor, which hinted at "who was in charge."Article continues below advertisementDonald Trump's Body Language DissectedSource: megaA body language expert claimed Donald Trump appeared more 'reserved than usual' while meeting with British Prime Minister Keir Starmer.