Diane talks with Donald Ayer, former U.S. Deputy Attorney General under George H. W. Bush.

Understanding the articles of impeachment against President Trump and why this process could transform the fundamental structure of American government.

Diane talks with Ruth Marcus, editor at the Washington Post. Her new book is "Supreme Ambition: Brett Kavanaugh and the Conservative Takeover."

In 2015 journalist and author Evan Thomas set out to get inside the troubled mind of President Richard Nixon. Using dozens of interviews and what was then newly released archival material, he paints a portrait of the complex man he calls “fantastically contradictory.”

What makes dogs so unique? Animal psychologist Clive Wynne says their capacity to love.

From Diane's archives: A 2002 interview with Fred Rogers, and a 2017 interview with Tom Hanks, the actor who masterfully brings him to life in the new film, "A Beautiful Day in the Neighborhood"

The news is not slowing down for Thanksgiving. Diane talks with New Yorker staff writer John Cassidy.

Last February, Yoni Appelbaum, an editor at The Atlantic, wrote an article making the case for impeaching President Trump. Diane checks in with him to see how his arguments hold up.

Julie Andrews has a new book called "Home Work: A Memoir of My Hollywood Years." Andrews co-wrote it with Emma Walton Hamilton, her daughter. Diane talks with both of them.

Diane talks with Harvard law professor Cass Sunstein, author of "Impeachment: A Citizen's Guide."

A conversation with billionaire businessman David Rubenstein about "patriotic philanthropy" and why he launched a series of history lessons for U.S. lawmakers.

With the impeachment inquiry set to enter a public phase, a look at the Democrats’ strategy and Congressman Adam Schiff, who has become the face of the investigation.

Feminist icon Gloria Steinem reflects on more than five decades of fighting for women’s rights and why today she feels both angry and hopeful.

A divided House votes to formalize the impeachment inquiry, marking a shift to a more public phase of the investigation.

In her new book, New York Times op-ed columnist Gail Collins goes back centuries to find out how and why our views of older women have changed.

What revelations in the impeachment inquiry say about the state of U.S. diplomacy – and why one veteran diplomat sees echoes of the McCarthy era.