briliantly put in many ways... one could possibly say an analogy for Iraq - some friend of a friend of a friend overheard something noone else believed - that a guy (let's say convicted felon who served his sentence) in next town has a gun in his basement. no idea why, but imagine you feel the urge to dispose of this "threat", maybe because you're a military nutjob, or anything else. it doesn't matter that many guys in his neighbourhood have the same weapon, and many more.
you try to rally your neighbours and friends to have a raid group. unsurprisingly, your german and french friends are against armed storming of someone else house based just on some overheard rumours (), rest is at least hesitant. you say something along "fk you puies" and storm the house with only friend you are left with - that british fella that you have so much in common with. Long story short, you kill the guy unarmed, don't find any weapon whatsoever and burn his house in the process to ashes. After that you refuse to move from his property, stating you need to keep that neighbourhood protected and invite other armed people to join you.
Sorry if I missed some important stuff, and of course this describes only beginning, with all the current mess being result of these (probably intentional) mistakes. If anyone still thinks US is viewed anywhere as a good guy in this war, then NO - there are only bad guys. Personally, ISIS would still have to work hard to match all US-directly-caused civilian casualities in Iraq. It doesn't matter much if someone is beheaded, blown to pieces or machinegunned while going to work, does it...
() - that Bush speech in UN was really horrible, I recall it quite well, saying to myself - and they want to screw up another nation completely based on THAT???