The president said he told Mattis to leave the Defense Secretary job because he wasn't successful enough in the post.

WASHINGTON РІР‚' In a newly published interview with the New York Times, President Donald Trump claimed he forced former Defense Secretary Jim Mattis to resign because 'I wasn't happy with the job that he was doing at all' and needed to make a change. 'I told Mattis to give me a letter (of resignation), ...