Asfandyar Mir of the U.S. Institute of Peace and Daniel Byman of Lawfare, Brookings, and Georgetown, are both analysts of al-Qaeda and terrorist groups. They have a different analysis, however, of how al-Qaeda is faring in the current world. Rather than argue about the subject on Twitter, they wrote an article on it, spelling out where they agree and where they disagree, and they joined Benjamin Wittes to talk it all through. Where is al-Qaeda strong and resilient? Where is it weak and failing? And where has it disappeared altogether?