Last week, the Trump administration used shaky reasoning to pursue additional sanctions against Iran. The proposal was rejected by nearly the entire U.N. Security Council, including close allies like the U.K and France. It was just the latest example of how “America First,” and the rejection of multilateralism under Trump, has turned the U.S. into a loner state on the world stage.
Guest: Fred Kaplan, Slate’s War Stories columnist. Fred is the author of The Bomb: Presidents, Generals, and the Secret History of Nuclear War. 
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