There is a growing sense that Mr. Trump seems unwilling or unable to do the things necessary to keep himself out of trouble, and that the presidency has done little to tame a shoot-from-the-hip-into-his-own-foot style that characterized his campaign.
There is a fear among some of Mr. Trump’s senior advisers about leaving him alone in meetings with foreign leaders out of concern he might speak out of turn. General McMaster, in particular, has tried to insert caveats or gentle corrections into conversations when he believes the president is straying off topic or onto boggy diplomatic ground.
This has, at times, chafed the president, according to two officials with knowledge of the situation. Mr. Trump, who still openly laments having to dismiss his first national security adviser, Michael T. Flynn, has groused that General McMaster talks too much in meetings, and the president has referred to him as “a pain,” according to one of the officials.
