But even that doctrine fails to cover possible imminent threats.
http://www.belmontclub.blogspot.com/...63193280039775
Libya was found to have purchased, not produced its nuclear program. The question the Belmont Club poses is: what if rogue nations collaborate to produce nuclear weapons? No one particular state would be seen as even being capable of an imminent threat. Maybe the early lesson from Libya is that not only is it possible, it's probable.
Going directly to Iraq may well be the least bloody of all solutions if it produces productive change in the mideast. There are promising signs but we won't be able to judge the whole thing for some time now, I imagine.