Tim Weiner is an American journalist and author known for his work on American intelligence agencies, such as the CIA. He has a reputation as an expert on national security issues and has won several accolors for his journalism, including the Pulitzer Prize and the National Book Award. Weiner has contributed to The New York Times and other notable publications, and his books include "Legacy of Ashes: The History of the CIA," which chronicles the history and controversies surrounding the Central Intelligence Agency, and "Enemies: A History of the FBI," which details the history of the Federal Bureau of Investigation. His writing is characterized by in-depth research and comprehensive analysis of complex governmental and security topics.