Correction: we know that someone wrote a classified memo about recruiting suicide bombers, including bombers who could hit American interests. We don't know whether they tried to recruit, and if they did, how many recruits they got. If they ever got any, what happened to them? How come none of them ever came to bomb our interests?
We certainly didn't know any of this before the war.
On the other hand, will we invade any country that secretly recruits suicide bombers this way? I'd be willing to guess that there are several.
http://www.freerepublic.com/~jveritas/
I certainly hope we take out any country that is preparing to attack us. What the hell is a country for if it can not defend itself?