The Russians tried a very similar strategy with proven negative results. This is a tribal society. They will fight to the last by any means available.
In that case, we should do what General “Stonewall” Jackson said during the battle of Fredricksburg: “Kill them. Kill them all.”
Actually, seriously, post 911, we should have destroyed the country and left. . .leaving a warning that if they EVER stuck their heads out of that sh*tbox again, we would take Stonewalls advice.
Send in the Daleks!
Then we need to get to the last one......