Ian Bremmer shares his insights on global politics this week on World In :60.

With reports of North Korean troops in Kursk, what is the likelihood of NATO directly intervening in the Ukraine-Russia war?

I do think that North Korean troops fighting in the Russia-Ukraine war is a major escalation, will lead to tougher sanctions, will lead to greater likelihood the Americans decide to allow for Western missiles to be used to target targets inside Russia. But the ultimatum that's been given is that if Russia deploys North Korean troops inside Ukraine itself, then NATO will respond with combat troops in Ukraine. That is a major escalation in this war. It is meant for the Russians to take it very seriously. I hope that Putin accordingly decides to keep those North Korean troops in Russia itself. And I know that the Chinese also are very concerned about where this is going. So, we'll watch this very closely.