Mandates, boosters and global supply. Georgetown University's Lawrence Gostin talks about what is legal -- and what might be most effective -- when it comes to getting Americans vaccinated.

Recognizing the men and women on the front lines of America's longest wars. To mark the 20th anniversary of 9/11, Diane talks to James Kitfield, author of the new book, "In The Company Of Heroes."

The Supreme Court's Texas abortion decision has shined a light on the justices' increasing reliance on a "shadow docket." Legal expert Stephen Vladeck on what that means for transparency and legitimacy at the nation's court.

Washington Post reporter Craig Whitlock says the U.S. government misled the public about our failures in Afghanistan -- for years . His new book is titled "The Afghanistan Papers: A Secret History of the War."

A conversation from the archives with singer, actor and producer Harry Belafonte. In 2003, he talked to Diane about his lifelong activism on behalf of civil and human rights, and his gratitude for the platform being a performer gave him.

A conversation from the archives with Dr. Ralph Stanley, the singer and banjo player whose "mountain music" gave rise to bluegrass. Stanley joined Diane in October 2009. He died in 2016 at age 89.