"Turkey is an important NATO ally. If you just look at the map, you see the importance of Turkey for the security of Europe." NATO Secretary General Jens Stoltenberg makes it clear how important Turkey is to the intergovernmental military alliance. But at the same time, he has some real concerns with how Turkey has been acting in recent years. At what point, though, would NATO consider kicking Turkey out of the alliance? That's a touchy question. He spoke with Ian Bremmer on this episode of GZERO World.

Watch the full episode: Will NATO adapt to emerging global threats?