As shown by the recent trials of Slobodan Milosevic, Charles Taylor, and Saddam Hussein, the large-scale and systematic commission of international crimes is usually planned and set in motion by senior political and military leaders. Nevertheless, the application of traditional forms of criminal liability leads to the conclusion that they are mere accessories to such crimes. This does not reflect their central role and often results in a punishment which is inappropriately low in view of the impact of their actions and omissions. For these reasons, international criminal law has placed...