[R]emoving Saddam Hussein from power brought about the end of one of the world’s most abusive governments. But intervening militarily on the territory of a sovereign state, without its permission, is inherently dangerous and must be undertaken for humanitarian purposes in only the most extreme cases. While Saddam Hussein had an atrocious human rights record, his worst atrocities were committed long before the intervention. At the time coalition forces invaded Iraq, there was no ongoing or imminent mass killing of the sort that would require the kind of preventive military action that should characterize true humanitarian interventions.