U.S. President Donald Trump received a letter from Kim Jong Un on Friday, the White House social media team showed in pictures published on Sunday, in a meeting surrounded by working-level officials.Trump received the letter in the Oval Office from a delegation led by Kim Yong Chol, following a meeting at a Dupont Circle hotel on Friday between Kim's team and a U.S. State Department group led by Secretary of State Mike Pompeo.As has become customary, no details were revealed about the letter, which follows reports about a letter Trump sent to Kim just over a