"Special Agent Paul Landis is in the follow-up car directly behind JFK’s and is at the president’s limo as soon as it stops at Parkland Memorial Hospital. He is inside Trauma Room #1, where the president is pronounced dead. He is on Air Force One with the president’s casket on the flight back to Washington, DC; an eyewitness to Lyndon Johnson taking the oath of office. What he saw is indelibly imprinted upon his psyche. He writes and files his...

Populist rage, ideological fracture, economic and technological shocks, geopolitical dangers and an international system studded with catastrophic risk - the early decades of the 21st century may be one of the most revolutionary periods in modern history. But they are not the first. Humans have lived, and thrived, through more than one great realignment. What makes an age a revolutionary one? And how do they end?In this major new work, Fareed Zakaria...