H.R. McMaster, February 2017 until April 2018 National Security Advisor under President Donald Trump, describes how critical it was at the beginning of his tenure to get clarity on scope. Listen to minutes 3:00 to 4:15 about “the nature of the problem”, and about “framing out the problem”:
McMaster earned an M.A. and a Ph.D. in History, both from the University of North Carolina at Chapel Hill. He turned his dissertation on the strategy of the U.S. in the Vietnam War into his book entitled Dereliction of Duty.