Former White House Chief of Staff John Kelly said he believes former national security adviser John Bolton’s assertion that President Donald Trump withheld aid from Ukraine to pressure that country into announcing an investigation of Joe Biden. “If John Bolton says that in the book, I believe John Bolton,” Kelly told the crowd at a lecture series in Sarasota, Florida, on Monday. Bolton’s accusation has become the latest twist in the Senate impeachment trial. A draft of his new book, obtained by The New York Times, says that Trump told Bolton last August that he wanted to freeze nearly $400...