The Iraq-al Qaeda connection has been at the center of much controversy. In his new book, Weekly Standard writer Stephen Hayes draws on top-secret intelligence documents and interviews with high-ranking Bush and Clinton administration officials to uncover new information about how America’s deadliest opponents worked together—a relationship that stretches back more than a decade and that may include collaboration on terrorist acts, chemical weapons training, and sheltering some of the world’s most wanted radicals.

Hayes describes what those links mean for the United States and examines why politicians, journalists, and intelligence experts—even in the face of mounting evidence of a Saddam-bin Laden collaboration—have shown themselves to be dangerously incurious.