 Iran, North Korea, China are propping up, fueling Russia's war of aggression against Ukraine. So how important is this revived relationship between Russia and North Korea, and what are the implications? Well, joining us to talk about this is Stephen Sestanovich. He's a senior fellow at the Council on Foreign Relations. He also served as U.S. ambassador-at-large to the former Soviet Union from 1997 to 2001. Stephen, welcome to On Point.