“Not for the last time,” writes Andrew Bacevich in his monumental new work, America’s War for the Greater Middle East: A Military History, “the claim proved to be illusory.” Indeed, one of the grim and eerie wonders of his book is the way in which just about every wrongheaded thing Washington did in that region in the 14-plus years since 9/11 had its surprising precursor in the two decades of American war there before the World Trade Center towers came down.