On the morning of Tuesday, September 11, 2001, four commercial airliners were hijacked above the US by the militant Islamist terrorist group al-Qaeda. What followed was the deadliest terrorist attack in history. Twenty years on, Dominic Sandbrook and Tom Holland look back at the events and discuss their impact. A Goalhanger Films & Left Peg Media production Produced by Jack Davenport Exec Producer Tony Pastor *The Rest Is History Live Tour 2023*: Tom and Dominic are back on tour this autumn! See them live in London, New Zealand, and Australia! Buy your tickets here: restishistorypod.com Twitter:  @TheRestHistory @holland_tom @dcsandbrook