Sure. And one thing we could say is, "realistically, nations are going to do this. It's cheap and easy and has a lot of upside if they succeed. So we tolerat

Sure. And one thing we could say is, "realistically, nations are going to do this. It's cheap and easy and has a lot of upside if they succeed. So we tolerate it." It's like how the international community accepts that the CIA, FSB, MI6, etc, exist -- nobody serious is really objecting to foreign spying in principle. But in that case -- if we were being consistent -- we might find (for example) Russian agents trying to swing the US election, and we would have to shrug: "ah well, everybody does it." And I doubt that's the attitude that our leaders would take!