Command responsibility, or executive accountability, assumes that leaders are responsible for the actions of their subordinates. If subordinates misbehave, violate basic moral laws, transgress international law, or thwart international standards of behavior, their leader may be called before to justice. Standards that set the boundaries of human action have been evolving for many millennia, with some degree of precision arriving after the post-World War II international war crimes prosecutions. The United Nations and other organizations have helped codify the international law under which...