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Is Trumpism crashing on the shoals of the Iran war?

That is what Christopher Caldwell thinks. Caldwell is a prominent thinker on the right. He’s a contributing editor at the conservative publication the Claremont Review of Books,and he’s one of the people who’ve been trying to define, and even craft, a coherent Trumpism. So his recent article in The Spectator, “The End of Trumpism,” sparked a lot of debate on the right.

At the core of this debate are some fundamental questions that I think remain unresolved, despite Trump’s decade-long dominance of the Republican Party: What is Trumpism? Is there Trumpism, or is there just Donald Trump?

Caldwell is a contributing writer for Times Opinion and the author of “The Age of Entitlement: America Since the Sixties.” In this conversation, he explains how he understood Trumpism as a movement of “democratic restoration” — and why he believes the Iran war betrays that. And I ask him why he sees the seams of Trump’s base fraying, despite polling that suggests otherwise.

Mentioned:

“The end of Trumpism” by Christopher Caldwell

The Age of Entitlement by Christopher Caldwell

“Is the West Becoming Pagan Again?” by Christopher Caldwell

Self-Rule by Robert H. Wiebe

“Trump as Alexander the Great” by John B. Judis

Book Recommendations:

The Gulag Archipelago by Aleksandr I. Solzhenitsyn

Common Ground by J. Anthony Lukas

Ball Four by Jim Bouton

Thoughts? Guest suggestions? Email us at ezrakleinshow@nytimes.com.

You can find transcripts (posted midday) and more episodes of “The Ezra Klein Show” at nytimes.com/ezra-klein-podcast, and you can find Ezra on Twitter @ezraklein. Book recommendations from all our guests are listed at https://www.nytimes.com/article/ezra-klein-show-book-recs.

This episode of “The Ezra Klein Show” was produced by Jack McCordick. Fact-checking by Michelle Harris with Kate Sinclair and Mary Marge Locker. Our senior engineer is Jeff Geld, with additional mixing by Aman Sahota. Our executive producer is Claire Gordon. The show’s production team also includes Marie Cascione, Annie Galvin, Rollin Hu, Kristin Lin, Emma Kehlbeck, Marina King and Jan Kobal. Original music by Pat McCusker. Audience strategy by Kristina Samulewski and Shannon Busta. The director of New York Times Opinion Audio is Annie-Rose Strasser.

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