With another Democratic debate last night, voters got to see a different side of the candidates. Held in the midst of an impeachment inquiry and the renewed outbreak of war and humanitarian catastrophe in Syria, voters finally got a better idea of each candidate’s foreign policy and how they fare under the spotlight. Activist Brittany Packnett and columnist Medhi Hasan break down what they saw.

One of the premier songwriters of the Rock and Roll era, Hall of Fame legend Robbie Robertson is best known as the lead guitarist and chief songwriter for The Band. He joins Walter to discuss his new solo album "Sinematic," his work with Martin Scorsese in writing the music score for the film "The Irishman," and a brilliant new documentary on The Band called "Once Were Brothers."

In 2003, Katharine Gun exposed a plot by U.S. security officials to spy on United Nations members as they ramped up pressure to secure a resolution to go to war with Iraq, and she leaked the classified memo to The Observer newspaper. Now her story has been adapted into the film "Official Secrets" starring Keira Knightley. Gun sits down with Christiane to share her story.

Jack Goldsmith, the former head of the office of legal counsel under former President George W. Bush, joins Christiane Amanpour to discuss the whistle blower inquiry and the limits of executive power.

Raj Chetty believes he may have found a way to reignite the American Dream. Using "Big Data," Chetty says we can offer equality of opportunity to kids of disadvantaged backgrounds. The renowned Harvard Professor has received plaudits for his work in harnessing data to propose solutions to economic inequality. He sits down with Hari to explain his work.

Jane Fonda has moved to Washington D.C. to launch "Fire Drill Fridays," where each week she will spearhead climate protests outside of Capitol Hill. Partly inspired by Swedish teenager Greta Thunberg’s activism, Jane lit up social media after being arrested during her first climate protest on Friday. She discusses her activism with Christiane.

Over the weekend, the situation in Northern Syria became drastic with the United Nations reporting more than 150,000 people displaced by the Turkish offensive. A U.S. withdrawal from the region has left a clear political and security vacuum. Shiraz Maher and Kori Schake join Christiane for an in-depth discussion about the continuing crisis.

There are few people who have been involved in as many critical decisions as Susan Rice. Serving in numerous capacities in both the Clinton and Obama administrations, Rice has helped to significantly shape U.S. foreign policy over the past two decades. She sits down with Walter Isaacson to discuss her new memoir, "Tough Love," which reflects on her career and legacy.

It has been twelve months since the brutal murder of Washington Post journalist and vocal critic of the Saudi regime, Jamal Khashoggi, at a Saudi Embassy in Turkey. A new book by award-winning journalist Jonathan Rugman offers a fresh insight into both the methodical planning and brutal execution of Khashoggi. He joins Christiane to discuss these revelations.

With a career that has spanned over four decades and forty books, there are few novelists in the industry as successful as Patricia Cornwell. Although best known for her iconic series featuring the intrepid medical examiner Kay Scarpetta, Cornwell has now launched a whole new series sparked by the idea of a female James Bond. Christiane speaks to the author about her new book, "Quantum."

Alastair Mactaggart pushed for groundbreaking privacy change after learning how much data Google collects on its users. A novice in politics, Mactaggart learned the process that saw California adopt the toughest digital privacy law in the U.S. Now, MacTaggart tells Hari Sreenivasan how he’s adopting a fresh campaign to take on tech giants.

Turkey enters day two of its offensive on Kurds in the North East of Syria. As Trump’s decision to withdraw troops from the region continues to divide his own party, a top military official says his decision will bring about an ISIS resurgence. Nancy McEldowney, former U.S. ambassador to Bulgaria, joins the program to discuss the situation.

British Prime Minister Boris Johnson and Ireland’s leader Leo Varadkar met behind closed doors today to discuss the Irish border – a sticking point in Brexit negotiations. After the meeting, Varadkar said that he did “see a pathway to a deal,” adding that he thinks it's “possible,” to come to an agreement. John Bruton joins Christiane to discuss a possible breakthrough in the meeting.

As the host of hit TV show Shark Tank and the owner of NBA franchise, the Dallas Mavericks, Mark Cuban is one of the most recognizable entrepreneurs in the world. In recent years, he has weighed into the world of politics leaving many to speculate on whether Cuban is flirting with a Presidential run. He sits down with Walter Isaacson.

To many critics, the Trump administration’s decision to pull out of Northern Syria is impulsive and disastrous. The Turks are moving in on the territory despite U.S. threats and it exemplifies the lack of American leadership on the international stage. To get an insight into the geopolitical consequences of all of this, Christiane speaks to John Allen in an exclusive interview.

As the world continues to plunge into chaos, it offers plenty of fodder for satirists. In his time, Chris Morris has taken comedic shots at journalists, world leaders and everything in between. With his new film, "The Day Shall Come," the comedian goes after the FBI’s relentless battle against terrorism—whether it is real or fictionalized.

President Trump’s decision to withdraw a U.S. presence from Northern Syria has led long term U.S. allies, the Syrian Kurds, to suspend their fight against ISIS in the region, and instead focus their attention on a war with incoming Turkish invaders. Christiane speaks to Gülnur Aybet, a top advisor to President Erdogan.

Last year, the world was shocked by the revelations of data analysis firm Cambridge Analytica having illegally harvested and exploited the data of millions of Facebook users. The man behind the revelation was whistleblower Christopher Wylie, former director of research for the company, which didn’t survive the scandal. He speaks to Hari Sreenivasan about data crime and its dangers to democracy.

Ukraine is at the center of the ongoing impeachment investigation. Many politicians from that country have expressed horror at being sucked into this growing political firestorm, particularly while it is still fighting a war with Russia in the east. Christiane gets the Ukrainian perspective from a former deputy foreign minister.

Today, the White House barred U.S. Ambassador to the EU Gordon Sondlanda, a key witness, from testifying to Congress over the Ukraine scandal. Chris Ruddy is a media mogul and close friend of the president, and he joins the program to dissect Trump’s thinking and approach to the impeachment investigation.