Another week, another Democratic presidential debate. The focus remains firmly on the contrast between frontrunner Joe Biden and his nearest challengers: Bernie Sanders and Elizabeth Warren. Those differences highlight the struggle not just for the nomination, but for the Democratic Party's future. Former strategists from both parties—Mark McKinnon and David Axelrod—join the program to discuss.

In her new book, journalist Azadeh Moaveni follows 13 women who were just girls when they left their home countries to marry militants. She joins the program in London to discuss the lives of the wives, widows and children of ISIS militants who are now languishing in refugee camps across war-torn Syria.

American students today owe a staggering $1.5 trillion in loans – that’s $28,000 in debt for the average graduate. But is it worth it? In his new book, “The Years That Matter Most,” author Paul Tough reminds us that the university system is already tilted towards the wealthy. He sits down with Michel Martin to discuss how inequality has come to define higher education.

Lily Tomlin and Jane Wagner's decades-long relationship has navigated extraordinary changing times, and now a major retrospective at Lincoln Center, “Two Free Women,” is celebrating their work. They speak with Christiane from L.A. to talk about their careers, partnership and this well-deserved honor.

Mark Sanford has become the third Republican to challenge President Trump in his own back yard, as the former Governor of South Carolina announced his bid for president this week. He joins the program from his home state to discuss his longshot bid for the White House.

Director Amy Schatz and Taresh Batra sit down with Hari Sreenivasan to discuss the new HBO documentary "In the Shadow of the Towers" and the experience of Stuyvesant High School students during the 9/11 terror attacks that occurred 18 years ago today.

BBC journalist Carrie Gracie took her employer to task when she discovered that as their China Editor working in Beijing, she was earning half what her equivalent male colleagues were being paid. Her bold fight opened up conversations about women’s value in the workplace, and Gracie joins Christiane in London to discuss her personal story and how women in the workplace can stand up for equal pay.

In October of 2017, journalists Jodi Kantor and Megan Twohey worked to expose Hollywood heavyweight producer Harvey Weinstein, sending shockwaves around the world and earning them a Pulitzer Prize. Their new book “She Said” details the painstaking work that went into their reporting, and just what it took to break such a difficult story.

Fourteen years ago, Hurricane Katrina wrecked Sarah M. Broom’s home and tore up her city. Her new memoir, “The Yellow House,” is an intimate look at a family that was scattered across America, but felt the gravitational pull of home. She speaks with Walter about healing and what remains after all seems to be gone.

Co-directors Waad Al-Kateab and Edward Watts join Christiane Amanpour to discuss their documentary "For Sama," which documents the transformation of the peaceful start of the Arab Spring into a brutal civil war that has destroyed much of Syria.

New reporting by CNN and the New York Times reveals that for decades, a spy with extraordinary access to the Kremlin has provided information to the CIA, only to be extracted by the U.S. in 2017. Jim Sciutto first broke the story, and joins the program alongside retired CIA operative Steve Hall, to discuss this and the ousting of John Bolton from the Trump Administration.

Fashion week is underway in New York City right now, and we get a masterclass in style from the iconic designer Dapper Dan. Born and raised in Harlem, his legendary designs are inspired by the neighborhood he loves. Now partnered with Gucci, Dapper Dan tells Hari how he worked his way up from nothing, as well as what gives someone style.

Over the weekend, President Trump tweeted that he cancelled secret peace talks with Taliban leaders at Camp David. Saad Mohseni has major business interests in Afghanistan, with the country’s largest media company, and has been informally advising the Afghan and US governments in these negotiations. He joins the program to dissect what went wrong, and look at what lies ahead for Afghanistan.

When President Trump cancelled secret peace talks with the Taliban at Camp David, he exposed deep fault lines within his own administration. President Ghani of Afghanistan had been due to join this planned – and now cancelled – summit, and his spokesperson joins the program from Kabul.

In the U.K. today, MPs are packing up and heading home, as Prime Minister Boris Johnson suspends parliament for the next five weeks in the run up to the critical October 31 Brexit deadline. Camilla Cavendish headed the policy team for former Prime Minister David Cameron – the man who called the Brexit referendum in 2016 – and joins the program in London.

Marc Brackett wants us to connect more; he is an emotional scientist and thinks that emotional intelligence skills should be taught from an early age. With mental health issues rising exponentially, his work has never been more pressing. Brackett sat down with Michel Martin to discuss his new book, “Permission to Feel."

Angelique Kidjo had to flee her home country of Benin as a young woman while it was suffering at the hands of a despotic ruler. But her brilliant creative spirit was her bridge out of the political darkness. She joins Christiane Amanpour to discuss her musical roots and her new album, "Celia."

John Browne was CEO of BP for more than a decade and became the first leader of a major oil company to acknowledge the link between fossil fuels and climate change – though it’s unclear whether the company actually met his goals for cutting carbon production. He joins Christiane Amanpour to discuss technology’s potential to solve our biggest problems and his new book, "Make, Think, Imagine."

400 years ago, a ship carrying more than 20 enslaved Africans arrived in Jamestown, Virginia, starting the long and painful history of slavery in the U.S. Journalist Linda Villarosa, a contributor to the New York Times Magazine's 1619 Project, sits down with Walter Isaacson to discuss slavery’s powerful legacy in shaping the very physical health of Americans today.

As Europe looks on in bafflement at the U.K.’s paroxysms, what Brexit could herald for the future of democracy on the continent is still in question. Political scientist Yascha Mounk joins the program from Berlin to provide reflections on democracy and European unity going forward.