In a word, horseshit! They were fighting against our troops. I don't care what the reason was. If they have actually, openly surrendered and laid down their arms, they should be treated humanely, as they are in the article. If they have not actually, openly surrendered and laid down their arms, they should be hunted down like (and with) dogs and exterminated as the vermin they are: you don't think for a heartbeat they wouldn't wantonly kill if left alive, do you?
No, you're right they would have killed our guys given the chance. I don't feel sorry for them. I just feel for our guys because they've got this ethical thing that they have to deal with in every instant of every moment. I understand our soldier killing that wounded insurgent who he said was "playing dead", I'd probably do the same thing (also heard on Fox the insurgents are booby-trapping dead bodies, injuring our guys), so it comes down to kill or be killed in a split-second decision.
How do you win a war against the worst of mankind in such a convoluted pack of wolves?