such interesting comments.....

What we DO, of course,is what we can. IF we can find the individuals who did this, we deal with them....harshly. There is, so far no evidence that Yemen knew about or condoned the attack, (different form the situation in Afghanistan in 2001), so we can't exactly go barreling thru Yemen, corralling suspects.
This is a different world today! We used to be able to IDENTIFY our enemies...now they are often just malcontents hiding among innocents..(or at least non-violent non-friends). There IS no obvious way to combat fanatical idiots. We can, at least, try to get those 'innocents' to be more friendly and not just make MORE enemies, like we have done in Iraq...but gee, that's wimpy,huh?

Whadda ya' want...we should just nuke every place where suspected terrorists 'might' live?