What can Biden’s America can offer the world? Former British ambassador Peter Westmacott, author of "They Call It Diplomacy," joins Christiane Amanpour to discuss. He says that despite a "nasty bump," the U.S. can be a guiding light for democracy. Then the documentary that everyone has been talking about; Samantha Stark, the director behind "Framing Britney Spears," explains what she learned about the pop icon and her controversial conservatorship. Out of 50 Republican senators, only seven dared to cross Trump and vote to convict the former president. One was Louisiana Senator Bill Cassidy; he speaks to our Walter Isaacson about why he’s sticking to his guns.

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