President-elect Donald Trump said on Sunday he would release classified documents in the coming days related to the assassinations of U.S. President John F. Kennedy, Senator Robert Kennedy and civil rights leader Martin Luther King Jr. Trump, who returns to the White House on Monday, promised on the campaign trail to release classified intelligence and law enforcement files on the 1963 assassination of JFK, as America's 35th president is widely known. He had made a similar promise during his 2017 to 2021 term, and he did in fact release some documents related to JFK's 1963 slaying.