First up this week is Christiane's exclusive interview with the President of Brazil, Luiz Inácio Lula da Silva, and his response to President Trump threatening him with a 50% tariff and claims the Bolsonaro investigation is a "witch hunt."   Then, Christiane talks to billionaire media mogul Barry Diller about his new book, Who Knew in which he bares all about his dysfunctional childhood, sexuality,  climb to success and his love for fashion queen Diane von Furstenberg. CNN's Donie O'Sullivan reports on the latest chapter of Ireland's national trauma, with excavations beginning this week in Tuam, Ireland for the remains of nearly 800 babies and young children who disappeared from what are known as mother and baby homes — their remains hidden in a septic tank beneath a housing estate. Plus, CIA chronicler and Pullitzer Prize-winning journalist Tim Weiner speaks with Christiane about his new book, "The Mission," why America is especially threatened now, and what intelligence looks like in the age of Trump. As the world marks the 56th anniversary of Apollo 11's trip to the moon, from Christiane's archive, her interview with American Astronaut Scott Kelly and Russian Cosmonaut Mikhail Kornienko from the International Space Station about how space travel made teams out of some of the world's most bitter rivals.