>there's no official "war" here. Just the US randomly killing people we don't like. Declare war and perhaps it's a different story. But we have not.
Really? That's what would make it ok to you? An official declaration? To me, the important criteria is that ISIS is on a murderous raping rampage specifically targeting civilians and we have the power to stop them.
>Either way, specifically targeting people for their speech, rather than their actions... you don't think that's problematic, even in war time?
I wouldn't use the world 'problematic'. I would simply say it requires caution. A person saying they think the enemy has valid points is not a legitimate target due to their speech. A person on a cell phone directing mortar strikes is, even though all he's doing is speaking. Remember, military officers rarely use their weapons, they're almost exclusively in the 'speech' camp.
Again, I think speech is important to protect, but "all he was doing was speaking" is not a get out of jail free card.