[jessriedel]

The author's argument is a good one, but note that, in the (perhaps rare) case of just wars, he doesn't even have to concede this point:

> The normative ideal in this case is the absence of war, yet the reality of war precludes that ideal. Therefore, any applied ethics of war are by definition morally flawed.

With the exception of true pacifism, which is exceptionally rare, essentially everyone agrees that there are just uses of violence. When within a nation with a functioning government, this is the police's uses of force. When it's between nations, it's war. No one would think that rules governing the police's use of violence are inconsistent with the fact that we'd all prefer violence be unnecessary. Likewise, there are at least some just wars (by at least one of the participants), and in these cases the just participant need not be morally flawed at all.