This week on the show: an examination of power and how it changes lives. 

With China and the U.S. vying for supremacy on the world stage, Christiane speaks to Nicholas Burns, veteran diplomat and now U.S. Ambassador to China, about where the relationship stands and what it means. 

Also, this hour: 50 years of 'The Powerbroker'. Robert Caro joins Christiane to discuss the long legacy and newfound pop culture status of his book about Robert Moses, one of the most powerful, unelected officials in American history. 

Then, correspondent David Culver reports from El Salvador on the power struggle between its president and criminal gangs which has transformed the country and why those who fled are now flocking back. 

Plus, power, sex and an unseen kingmaker: the remarkable story of Pamela Churchill Harriman as told by author Sonia Purnell. 

And from the Amanpour Archive: Billie Jean King reflects on beating Bobby Riggs 51 years ago in the most watched tennis match in history, dubbed 'the battle of the sexes'. 

And finally, French filmmaker Coralie Fargeat on the beauty standards "building a jail" around women and her hit film starring Demi Moore, 'The Substance'. 

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