A key member of Petraeus' "Baghdad brain trust" is Col. H.R. McMaster, author of the book "Dereliction of Duty" that analyzes the mistakes of the Vietnam War. McMaster's skills in executing a "clear, hold, and build" counterinsurgency strategy succeeded spectacularly in bringing the city of Tal Afar in western Nineva Province under coalition control in the fall of 2005. Voter turnout in the Tal Afar region soon increased by about 550%.