Cheney pushed to expand executive power and was a key force behind the U.S.-led invasion of Iraq. FRONTLINE chronicled his influence in multiple documentaries.

FRONTLINE first reported on the emergence of the Islamic State of Iraq and Syria in early February 2014, months before the group made international headlines declaring its own caliphate. Since then, ...

In 2003, the United States invaded Iraq to topple dictator Saddam Hussein. During the subsequent eight years, the U.S. spent trillions of dollars and lost thousands of American lives fighting an ...