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.

Come Tuesday, Montgomery, Alabama, will celebrate the inauguration of Steve Reed, its first African American mayor. The majority-black city is plagued by crime and economic inequality, in a state ranked dead last for education. As he prepares to take office, Christiane asks Mayor-elect Reed about his daunting to-do list and the history he is making.

Professor Leonard Kleinrock and his former student Vint Cerf – now Vice President of Google – are known as the founding fathers of the internet, after they pioneered the technology that underpins it. It’s changed the world and the very way we live, yet at the time, they had no idea just how big their work would become. Miles O’Brien sits down with them both to reflect on those early days.

Democrats have taken control of the Virginia statehouse for the first time in decades, and after a tight election, Democrat Andy Beshear is declaring victory as Governor of the deep red state of Kentucky. How much can be read into these results as bellwethers for 2020? Republican campaign consultant Scott Jennings and political columnist for The Nation John Nichols join the program to discuss.

Most of Kashmir's leaders have reportedly been detained since the disputed territory was stripped of its special autonomous status in August. Among them is former Chief Minister Mehbooba Mufti. Her daughter joins the program from New Delhi to try and get a near-silent international community to listen.

A group of musicians and performers are taking Broadway by storm with their new show, "Freestyle Love Supreme," masterminded - among others - by "Hamilton" creator Lin-Manuel Miranda. A meeting point between rap and improv, every day is different, as the show is based on audience suggestions. Hari sits down with three of the cast members for a lesson in freestyling.

President Trump's formal pledge to withdraw from the most ambitious climate accord to date - the Paris Agreement - comes at a time when we can see environmental emergencies right in front of our face. In California, raging fires burned nearly 100,000 acres, forcing thousands to flee their homes. Christiane speaks with the state's Lieutenant Governor to explore the crisis.

Five weeks from now, the British people face another general election, which once again attempts to resolve the bedeviling issue of how - or even if - the country should leave the European Union. George Osborne was in charge of the U.K.'s finances as Chancellor of the Exchequer when Britain narrowly voted for Brexit, and now is the editor of the Evening Standard. He joins the program from London.

Twitter co-founder Ev Williams stepped away from the company to turn his attention to Medium, an online publishing platform designed to showcase longer, more nuanced content. Williams tells Walter that while Twitter needs to take responsibility for the quality of its content, it shouldn’t risk losing its role as a place for the exchange of important ideas.

Deadly protests have erupted in Iraq in the biggest wave of demonstrations since the fall of Saddam Hussein, echoing recent demonstrations in Lebanon. Two regional experts join Christiane to clarify the situation: Vali Nasr has served the State Department and spent years studying the region, while Karl Sharro is a Lebanese-Iraqi satirist who tweets razor-sharp commentary on the Middle East.

Legendary actress Julie Andrews became a household name with Mary Poppins, and has rarely left our screens since. Her new memoir, “Home Work,” covers her incredible years at the heart of Hollywood, including “The Sound of Music” and her sometimes difficult marriage to film director Blake Edwards. She joins Christiane in London to discuss mental health and her dazzling career.

In corporate America, it is now widely accepted that diversity of gender, race, and background makes any organization perform better. It's the reason why StubHub President Sukhinder Singh Cassidy founded theBoardlist, a talent recruitment forum. She sits down with Hari to discuss how diversity can be bolstered in the tech industry.

How could a man as demonstrably evil as Adolf Hitler come to power? And what lessons can we learn from this today? As populations around the world once again turn to authoritarian leaders, the questions aren’t academic. Historian Brendan Simms' new book explores Hitler’s rise to power, and he joins the program to explain how it’s not just the times that give rise to the worst type of leader.

Religion scholar Karen Armstrong is a former Catholic nun who rose to prominence after 9/11, when she was able to do what few others would, or could: explain Islam to an angry and terrified West. She joins the program to talk about her new book and her amazing life story, from religious nun to secular scripture expert.

Ocean Vuong's debut novel, “On Earth We’re Briefly Gorgeous,” spent six weeks on the New York Times bestseller list. Semi-autobiographical, it is written in the form of a letter from a young Vietnamese-American to his illiterate mother. Vuong speaks with Michel about the force behind his creative spirit.

Harriet Tubman is a true American hero, and now her remarkable story is coming back to life in the new movie "Harriet." Tubman escaped slavery and came to be known as the Moses of her people for leading others to freedom on the Underground Railroad. Cynthia Erivo stars as Harriet Tubman, and Leslie Odom, Jr. plays a prominent abolitionist who connected Tubman to the network.

Fires are raging in California, wreaking havoc from north of San Francisco down to Los Angeles. Hundreds of thousands of people are displaced and many more are simply in the dark, without power. Public policy expert and former Labor Secretary Robert Reich joins Christiane to assess the crisis.

It's a somber day in American presidential history, as the House of Representatives votes to formally bring an impeachment inquiry into President Trump. Norman Ornstein understands the inner workings of Congress better than most, and joins the program to assess these historic developments.

With a readership of more than one and a half million, The Economist is at the forefront of the global conversation. Zanny Minton Beddoes became the magazine’s first female editor in 2015, and is consistently included in Forbes’ top 100 most influential women. She sits down with Walter to discuss her work, Elizabeth Warren, China, and what the Brexit vote really represents.

After weeks of fact-finding behind closed doors, the House is gearing up to vote on the best way to present its impeachment inquiry to the public. Former Secretary of Defense William Cohen has been closely watching these hearings – as a member of the judiciary committee during Watergate, he was one of a handful of Republicans who voted for Nixon’s impeachment. He gives Christiane his perspective.