At the close of World War II (WWII), Winston Churchill suggested summarily executing the remaining Nazi leadership. Franklin Delano Roosevelt disagreed, insisting on prosecuting them in an international military tribunal. This is considered the “birth” of International Criminal Law (ICL), following a consensus that “[t]he Nazi atrocities gave rise to the idea that some crimes are so grave as to concern the international community as a whole.” A few earlier instances of penal action against violators of the laws of war are acknowledged, but they are dismissed as unrelated to current ICL, because (presumably) these cases are sporadic domestic legal actions that lack a common doctrine.