A day that changed the world. This is how 9/11, 2001 is often described. And it's true. The world looked in disbelief when planes piloted by Al-Qaeda terrorists hit The World Trade Center and the Pentagon. Almost 3 000 people died and subsequently it affected the fate of millions. Colin Clarke is a New Yorker and he admits that the 20th anniversary of Al-Qaeda attacks is very emotional for him. But Dr. Clarke is also a Senior Research Fellow at The Soufan Center and Director of Policy and Research at The Soufan Group, where his research focuses on domestic and transnational terrorism, international security, and geopolitics. His most recent book is called After the Caliphate: The Islamic State and the Future Terrorist Diaspora. That's why we discussed successes and failures of the war on terror, the role of Osama bin Laden, if 9/11 was preventable or a scenario when Al-Qaeda attacks didn't happen. Listen to our conversation. And if you enjoy what I do, please support me on Ko-fi! Thank you. https://ko-fi.com/amatisak