The White House told former national security adviser John Bolton that his manuscript included “significant amounts of classified information,” according to a Jan. 23 letter made public on Jan. 29. Bolton has a book scheduled for a March release; parts of the book were leaked to the media, which published some of the details. The letter was sent to Bolton’s lawyer, Charles Cooper, from Ellen Knight, the senior director for records, access, and information security management for the White House National Security Council. “Based on our preliminary review, the manuscript appears to contain significant amounts of classified information. It also...