Lawyer: Bolton has knowledge about Ukraine not yet public

Former national security adviser John Bolton was "part of many relevant meetings and conversations" pertaining to the House impeachment inquiry of President Donald Trump that are not yet public, his lawyer said Friday.Charles Cooper made the revelation in a letter that suggests Bolton will appear before Congress only if a judge orders him to do so.The letter, addressed to the top lawyer for the House of Representatives, seeks to distinguish Bolton and former deputy Charles Kupperman from other c