I would rate his series of books more historical fantasy than anything else.

Zeihan is Pop Geopolitics, rendering the subject about as accessible and interesting as it could ever be to a wide audience but is as divergent from the real work as you would expect from pop- anything. Most obviously, Zeihan ignites the reader's imagination of apocalyptic futures without ever explicitly predicting or detailing them.

The future will far more likely turn out to be mundanely unpleasant rather than captivatingly apocalyptic. But that wouldn't keep the audience that Zeihan has on the edge of it's seat and so while many others in his field think that way, they're not garnering the same kind of views.

I find his stuff very engaging and there's a lot to be taken from it, but it should be taken with a skeptical mindset of 'what's the most boring way this might play out' to approach some kind of truth.

I would love recommendations for more serious/less poppy books on the same topics.