Before Joe Biden left for Poland, he and European Commission President Ursula von der Leyen announced a joint task force to wean Europe from its dependence on Russian oil and gas. Christine Lagarde is president of the European Central Bank, and in an exclusive interview with Christiane, she warns the costs to the European and the global economy are rising. Also on today's show: US Ambassador to NATO Julianne Smith, award-winning Harvard Professor of Constitutional Law Tomiko Brown-Nagin, and actor Penelope Cruz. To learn more about how CNN protects listener privacy, visit cnn.com/privacy