John M. Newman spent 20 years with US Army Intelligence, and served as executive assistant to the director of the NSA.  After leaving government work he joined the faculty of U. Maryland where he taught Soviet, Chinese, East Asian, and Vietnam War history, as well as Sino-Soviet and U.S.-Soviet relations.  He is author of two ground-breaking books, JFK and Vietnam (1992) and Oswald and the CIA (1995, republished with addendum, 2008).  Dr. Newman is working on a multi-volume history of CIA covert operations involving Cuba, the first of which, Where Angels Tread Lightly, appeared in 2015.  Read more here.