One thing we know for sure: if the situation were reversed, the video of the beheading of the Seal(s) would have been shown on TV & throughout the world. So, IMHO, if the Seals didn't kill the fuc#er while in captivity, then we're well ahead of them on the scale of legal forbearance.
I don't see how that's germane to this situation. I don't think we're debating or comparing the relative merits of our legal system to "theirs." These guys don't just have free reign to go out and do whatever they want and I suspect that a live terrorist who can subsequently be interrogated is almost always preferrable to a dead one. All you "kill 'em all" crowd don't really understand what the mission is here. Forest for the trees, people.
Brett