The Road to 9/11: Download Your Free Collection - Newsweek

On the 25th anniversary of September 11, we've brought together our acclaimed Road to 9/11 series into a single downloadable collection.

As we remember the events of that day, the collection provides a detailed look back at the warnings, policy and intelligence decisions, and global developments that shaped the road to 9/11.

It's free to download through September 18.

On the morning of August 6, 2001, President George W. Bush received an intelligence brief with a title that would live in infamy: “Bin Laden Determined To Strike in U.S.”

Thirty-six days later, 19 men boarded four airliners. There was a story that unfolded between those two mornings, and it was not a story of a government that knew nothing.

Tragically, however, that knowledge was scattered across agencies, field offices and databases, without anyone putting the pieces of the puzzle together in time. The clues were there: a future hijacker paying for flight time in Florida, a visa issued in Jeddah to a man the CIA had already linked to Al-Qaeda, a Minnesota flight school warning the FBI that a 747 loaded with fuel could be used as a weapon

For the 25th anniversary of the 9/11 attacks, Newsweek is revisiting those crucial days, one at a time. Each installment asks the same questions: What was known that day? Who knew it? And what, if anything, was done about it?

William M. Arkin, the original author of this series, has spent more than four decades reporting and writing about American national security and intelligence. He is the author of On That Day: The Definitive Timeline of 9/11.