Is Human Action Responsible for Climate Change?

I think the Russia and Ukraine stuff I'm sort of you know obviously follow quite closely because of my Silk Roads worlds. But it's a slightly different story. I mean I think we just listened to what you were saying there about being prepared. One of the interesting things as a historian is how how brittle empires or how apparently robust empires can suddenly collapse. And that is surely only going to get worse as these things become more of a crisis.