The seas of the Middle East are bristling with American warships and airpower trained on Iran. What does President Trump have in mind for them?

Host Mary Louise Kelly talks with National Security Correspondent Greg Myre and Pentagon Correspondent Tom Bowman about Trump's aims in nuclear negotiations with Iran and the risks of military action.

And four years after Russia's full-scale invasion of Ukraine, a look at the many obstacles to peace and how Ukraine has pioneered a scrappy, improvised way of fighting, built around inexpensive drones.Email the show at [email protected].

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