Who wants to be policeman of the world in the twenty-first century? America has tried the role, bless it, and the results have yielded little joy. The greatest military machine mankind has ever seen can’t seem to win a war. The conflicts in Vietnam, Korea, Afghanistan, and Iraq all proved to be great wastes of American treasure and blood. Even the apparently successful U.S.-led interventions, such as in Libya in 2011, have led to disaster. What the historian Andrew J. Bacevich calls America’s “War for the Greater Middle East” has proved to be its unmaking as the world’s undisputed superpower. America’s quest to spread its freedom, abundance and security has ended up reducing its freedom, abundance and security.