When we are talking about launching a war or retalitory strike against the people that planned 911, their nationality does matter. What passports were they carrying? Who did they associate with? Where did their funding come from? These are all important questions. If the supposed mastermind was Kuwaiti, how come we didn't go into Kuwait and tear sh*t up? Nobody ever accused Iraq of being the instigators of 911. We used the American public's outrage and desperation to strike out at someone to invade Iraq. The informant that the WMD statement was based upon was full of crap.
https://en.wikipedia.org/wiki/Curveball_(informant)
And all this information is suspect when you consider 911 ain't right in so many ways. I'm not saying it wasn't terrorism, people died horribly and it surely did inspire terror. And anger.
Can you imagine this Iraqi informant "curveball", if we had decided to interrogate him with enhanced techniques? He probably would have said all kinds of more crazy sh*t, and all of it would have been lies.
Let me enlighten you to how most(not all) of the people end up in these torture camps. They are snitched on, and snitches get paid for everyone they turn in. This is the most unreliable way to collect information, especially in poor and desperate locations. Anyone who has a grudge can have someone gotten rid of easily. I am not for torturing people scooped up in this manner.
Now, if you see someone planting an IED, that is another story. Grab them and beat the sh*t out of them. Even then, you can't just believe anything they say.