I don't agree with that. I think that under international law, states are restricted in what they can do to other states, but there's a big exemption to that. One of those exemptions is self-defence, which is defined very broadly. I think most of what would be envisaged under the provisions that we're talking about would fall under the exemption in international law relating to self-defence. Technically speaking, it may be hacking, but it's hacking that's necessary, I would argue, for national security.
On February 6th, 2018. See this statement in context.