'Walking Dead' and the Ethics of War

Do the usual rules apply when the war one is fighting involves the zombie apocalypse?
Zombies = hostis humani generis.

The grimly foreboding conclusion of the second episode of season five of "The Walking Dead" raises some interesting questions of ethics. What we discover at the end (spoilers follow, but if you're a fan, you already know, and if you're not, you don't care) is that not every member of Gareth's merry band of cannibals was burned to death in the destruction of Terminus. The remnant, led by garrulous Gareth himself, is on the loose, and poor Bob is on the menu.

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