What happens if NATO collapses—or if the United States simply walks away? In this episode, we speculate on a future that feels closer than ever. With the Trump administration openly hostile to the alliance and European allies refusing to be dragged into an illegal war in the Persian Gulf, the post-WW2 transatlantic bargain is coming undone.

We go back to the beginning: why NATO was founded to keep the Russians out, the Germans down, and the Americans in. From Ernest Bevin’s Britain to the Truman Doctrine and the birth of Atlanticism, we trace how the alliance shaped the Cold War world. Then we ask the hard questions: Would a US withdrawal trigger a new European defense order? Could Russia really rebuild its empire? And what happens to American power, intelligence sharing, and the arms industry when the nuclear umbrella is gone?

This is not a prediction—it’s a necessary speculation. The world at the end of the 2020s will look nothing like the one we entered. And the biggest winner of all might just be China.

Welcome back to the *Explaining History Podcast*.

Explaining History helps you understand the 20th Century through critical conversations and expert interviews. We connect the past to the present. If you enjoy the show, please subscribe and share.

▸ Support the Show & Get Exclusive Content

Become a Patron: patreon.com/explaininghistory

▸ Join the Community & Continue the Conversation

Facebook Group: facebook.com/groups/ExplainingHistoryPodcast

Substack: theexplaininghistorypodcast.substack.com

▸ Read Articles & Go Deeper

Website: explaininghistory.org

Hosted on Acast. See acast.com/privacy for more information.