Well, if the attacker manages to kill a few thousand people, there's precedent for the USA going to war over it. It would depend on the host nation of course, i

Well, if the attacker manages to kill a few thousand people, there's precedent for the USA going to war over it. It would depend on the host nation of course, if it was e.g. China, Russia or some state in their sphere of influence, it'd be different than if the hackers were holed out in, say, Afghanistan.