1. Torture, it does not work. This is a proven fact. Get the fuck over it, all of you 'lolz torture savez livez' people. You are all idiots.
2. It was war. In war, people die, and interestingly, the insurgents/Taliban do actually fit the bill of 'enemy combatants', as they do not wear uniforms, do not, in essence, behave like a military, attack civilians and are often not from the nation in question. In short, while they do fit the legal definition, they really should have been afforded a much better level of care- at least not being tortured.
Look, you can not say they are civilians- they shoot at soldiers. If they were, they would be criminals. Ideally, they would be treat as PoWs, but that to is unfeasible, as they have very little formal training and all the other problems I outlined earlier.
3. As a leftwing liberal, I supported Afghanistan, because capturing Bin Laden was a bloody good idea. Yes, we haven't, but there is an old military saying: "No plan survives contact with the enemy". Ergo, one shouldn't criticise either the politicians or the military for failing their objectives- unless you think you can do better.
I also supported Iraq, mainly because Saddam Hussein killed someone I knew. And his entire family- his mother, his father, their parents, his sisters, brother, aunts, uncles, cousins- the entire goddamn line was wiped out! And what a lot of people fail to realise is that the 'we've caused anarchy worse that saddam' argument is a fail. Saddam had to die sometime, and when that happened, there would have been anarchy as well. Only there wouldn't have been a sane, democratic state emerging out of that anarchy- at best, another miniaturised Stalin. At worst, another Iran.
4. Bush was a monkey, but of all the charges laid against him, only torture stands. War - a state may go to war where and when it pleases. Lying to the public - please. Every politician does that.