It's not as straight forward as this. Many innocent people died (and would have continued to die) at the hands of Saddam Hussein's regime. So, was removing a ruthless dictator a good thing to do? On the surface, probably yes, but Saddam's removal left a huge power vacuum in the region, allowing even more extreme and violent factions to set up shop. So, in the end, would it have been better to leave a known genocide practitioner in place to maintain regional stability?