This issue has, I think, been obvious for some time now.
“A new classified assessment by the Central Intelligence Agency says Iraq may prove to be an even more effective training ground for Islamic extremists than Afghanistan was in Al Qaeda’s early days, because it is serving as a real-world laboratory for urban combat.
The assessment, completed last month and circulated among government agencies, was described in recent days by several Congressional and intelligence officials. The officials said it made clear that the war was likely to produce a dangerous legacy by dispersing to other countries Iraqi and foreign combatants more adept and better organized than they were before the conflict.”
Which makes the problems raised in this post all the more preoccupying.