It is a very important question and it's very germane to what's going on in Russia and Ukraine.
Russia is still a very serious cyber-actor. As you indicated, the top four are Russia, China, Iran and North Korea.
With respect to your comments on cyberwarfare and more traditional conventional warfare, early in the fall we definitely saw a direct link between cyber events and kinetic activity. Just prior to any bombing of an area, we would see an increase in utilization of servers and IT systems that preceded a target being hit shortly thereafter.
There is a link between their cyber activity and their kinetic, conventional activity.