Face the Nation on the Radio 4/18

On this week's "Face the Nation," moderator Margaret Brennan talks to Dr. Anthony Fauci and former FDA commissioner Dr. Scott Gottlieb about the concern over the Johnson and Johnson vaccine, and new cases that are on the rise. We'll hear from French President Emmanuel Macron about sanctions on Russia, as well as Ambassador Linda Thomas-Greenfield about America's role in the world and our approach to some of our greatest global challenges.

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