Marie Yovanovitch describes vital U.S. interests as trying to help set up a stable, free and democratic Ukraine that could resist pressure from Russia. New Yorker columnist Masha Gessen has deep insight into how authoritarian leaders like Vladimir Putin function, and says she is “shocked but not surprised” by what we are learning in this impeachment inquiry. She joins the program from New York.

It took the buy-in of Democratic representatives from swing districts to prompt Speaker Pelosi to begin the impeachment investigation. One of those was Democratic Congresswoman Elissa Slotkin, who has faced challenges convincing her constituents of the need to consider impeachment. She joins the program from Michigan to assess how the week’s hearings have gone down in her part of the country.

When Adam Frankel was 25 years old, he discovered something shocking: he wasn’t his father’s biological son, a secret his mother had kept from him his whole life. At the time, he was making waves as a talented speechwriter for President Obama. His debut book “The Survivors” captures his experience, and he sits down with Walter to discuss his powerful story.

Washington is gearing up for a second day of public impeachment hearings on Friday, when Marie Yovanovitch will testify. Nancy McEldowney was a colleague of Yovanovitch’s for many years, having served in the foreign service under both Republican and Democratic administrations; she joins the program with former FBI general counsel James Baker, who oversaw the launch of the Mueller investigation.

A new film starring Mark Ruffalo is a true story about cover-ups and conspiracies at the highest levels of the corporate world. “Dark Waters” follows Rob Bilott, played by Ruffalo, who took on the chemical company DuPont after one of its West Virginia plants leaked the chemical PFOA into the water supply. Ruffalo and Bilott join Christiane to discuss this true and timely investigation.

Today, Congress began hearing public testimony in the impeachment inquiry into President Trump. To digest this first day of public impeachment testimony, Christiane speaks with former representatives from both sides of the aisle: former chair of the House Intelligence Committee Mike Rogers and former member of the House Judiciary Committee Elizabeth Holtzman.

At the heart of the impeachment inquiry is Ukraine, and today’s testimony brought into sharp relief the challenges that country faces both militarily and over corruption. To understand what’s at stake for Ukraine and why it is vital to US foreign policy interests, Anthony Gardner joins the program in London.

In today’s hearings, there was talk of President Trump trying to publicly box in President Zelensky, involving a planned TV interview where the Ukrainian leader was to publicly announce investigations into the Bidens and alleged Ukrainian meddling in 2016. To provide perspective on these tactics, Christiane speaks with veteran journalist Jeff Greenfield and legendary reporter Carl Bernstein.

Garry Kasparov became the youngest world chess champion in history at the age of 22, while his famous matches against the IBM supercomputer Deep Blue brought chess and artificial intelligence into the mainstream. Now, he’s focusing on the quiet war Russia is waging against U.S. democracy. Kasparov sits down with Miles O’Brien to discuss everything from troll farms to election interference.

The impeachment inquiry is an inevitably political process, despite the non-partisan credentials of the witnesses scheduled this week. Joe Crowley was chair of the House Democratic Caucus until he lost his primary to Alexandria Ocasio Cortez, but remains close to House Speaker Nancy Pelosi. He joins the program in London to break down what we can expect politically from the coming hearings.

On Wednesday, the all-consuming political drama of impeachment goes public for the first time on Capitol Hill, with the chance to see testimony first-hand from various government officials – including Trump appointees – who have corroborated the original whistleblower complaint. Former Deputy CIA director John McLaughlin joins the program to discuss what's at stake.

In Israel today, many cities have closed schools and businesses as Palestinian militants fired missiles across the border. This comes as Israel languishes in a state of political confusion: after two inconclusive elections, Blue and White Party leader Benny Gantz is still trying to form a ruling coalition, after Prime Minister Netanyahu’s failed attempts. Yair Golan joins the program to discuss.

Ronan Farrow was at the forefront of the reporting that triggered the #MeToo movement, and shared a Pulitzer Prize for his efforts. Having helped expose allegations of sexual abuse by Hollywood mega-producer Harvey Weinstein, Farrow now goes further in his new book, “Catch and Kill.” He sits down with Michel to detail his painstaking investigations.

This week sees a new phase in the impeachment inquiry, as it goes public for the first time and American voters get their first opportunity to see unfiltered testimony from key witnesses. New York Times executive editor Dean Baquet joins the program in London to discuss the challenges of covering the Trump administration, as well as the criticisms his newspaper has faced in recent times.

Artist Antony Gormley's newest exhibition represents a significant milestone in his career, as he takes over the prestigious Royal Academy in London with a series of experimental installations. Few other artists would be allowed to flood one room with water and mud, or drill holes in a glass dome in another space—but Gormley was. He gives Christiane a hands-on look at his work.

30 years ago this weekend, the Berlin Wall fell. To assess this historic anniversary and its consequences, Christiane speaks with three people who witnessed history first hand: Christopher Mallaby was Britain’s Ambassador to West Germany when the Wall fell, while historian Timothy Garton Ash and Russian foreign policy expert Andrey Kortunov were both in Berlin that fateful night.

A new production in London’s West End offers a fresh interpretation of Arthur Miller's "Death of a Salesman": at the suggestion of Miller’s daughter Rebecca, the central Loman family is African American. Actor Wendell Pierce plays patriarch Willy Loman, and he joins Christiane to discuss his role and the significance of African American art.

”The Last Black Man in San Francisco” is a semi-autobiographical film following Jimmie Fails as he tries to regain his father’s house. It’s a passion project for its star—he and the director, Joe Talbot, first conceived of the film when they were just teenagers. Fails sits down with Hari to discuss how he feels now that it has turned out to be one of the best-reviewed films of the year.

The Westboro Baptist Church is known for picketing military funerals and its celebration of death and tragedy, even the 9/11 attacks. Megan Phelps-Roper is the granddaughter of the church's founder and was one of its staunchest members. But seven years ago, she broke away and now works to combat extremism. She sits down with Michel to talk about her journey and new memoir "Unfollow."

Once a leading practitioner of Russia’s brand of “gangster capitalism,” Mikhail Khodorkovsky now lives in exile in Britain, supporting the anti-Putin opposition. He spent a decade in jail in Russia based on politically motivated charges, and his story is the focus of a new documentary by Oscar-winning filmmaker Alex Gibney. They both join the program to discuss this quintessentially Russian story.