[+/-] Moral versus material strength
Check out the Daou Report for a good breakdown of BushCo ethics:
Faced with the disintegration of the original rationale for war, Bush and his supporters are scrambling to find the elusive moral ground to undergird America’s presence in Iraq. But when you’re on the record invading a country because it was a grave threat and the threat never materializes, you’re left with little but a means-ends argument to justify it. In the eyes of the war’s opponents, Bush and his apologists are mired in an ethical swamp trying to justify the mess they created....
The problem with the Bush apologists' reasoning is that using an infinite time horizon - which they are so fond of - virtually any action, no matter how egregious, can be shown to lead to some positive results. It’s the bastardization of utilitarianism; asserting a causal relationship between a pre-emptive invasion of a sovereign nation and all future good developments in Iraq and the Middle East may swell the hawks' breasts with pride, but it's a dubious and dangerous way to conduct foreign policy.
Which is precisely why we need to adhere so strictly to the rule of law, to basic moral precepts, and to established principles of international relations, something that this administration has failed to do, and that the administration's supporters can dance around but can't justify.