I think they should become aware that entering into a combat zone on the side of the enemy is a hostile act and should be treated accordingly. No different than playing dead on the battlefield is also a hostile act. Sorry if that sounds cruel but these people only understand strength. They are not Westerners and don't play by our own rules but take advantage of them, which is the fallacy of counterinsurgency tactics. They have their own version of handling things and that includes using human shields. I hate to be the one to state this but things are going to escalate in the Middle East until we start seeing massive casualties and suffering comparable only to the times during World War II. Germany and Japan kept up the "total war" strategy and determination until they had to be burned to the ground and started up again from the rubble. Ironically, they are basically our allies today.