[rcw4256]

Yes, but you need to be prepared to take it to court when someone uses your software in war.

[hprotagonist]

and when the answer is “hey, it’s GPL’d, here’s our source download link, fuck off we’re exactly following the rules”?

Licenses are not a viable solution to this sort of ethical quandry.

[rcw4256]

That answer should be unsatisfactory to the court, since it wasn't licensed under the GPL. The rules, in this case, say no use in war.