Robert Gates and the Iran-Contra Affair.

In his new book, New York Times journalist Tim Weiner paints a portrait of a president overwhelmed by wars at home and abroad, whose self-destructive behavior resulted in "political suicide."

As J. Edgar Hoover became increasingly worried about communist threats against America, he instructed the bureau to conduct secret intelligence operations against anyone deemed "subversive." A new book, Enemies: A History of the FBI, details those and other secret intelligence operations from the bureau's creation through the current fight against terrorism.

Pulitzer Prize-winning New York Times correspondent Tim Weiner discusses his book Legacy of Ashes: The History of the CIA. Weiner did extensive archival research and conducted interviews with CIA insiders, including former chiefs Richard Helms and Stansfield Turner.