Terrorism.
The way terrorism is fought now is like trying to catch all rain water with a glass during a storm.
Terrorism is worldwide all the time. There are terrorists in every country, all the time.
Imo trying to fight terrorism one country at a time, or one man at a time is useless. So what if Iraq is Democratic and terrorist free? Iran, Saudi Arabia, Syria, Canada, France, Belgium, Norway, Australia, Congo, Angola, USA, etc all harbor terrorists, wether they know it or not.
The only way to truly fight terrorism is a real world war, where every single country participate, as one, in the war efforts specifically to counter terrorism.
Everywhere, at all times.
Is catching one man going to solve the terrorist threats everywhere?
I don't think so.