As al Qaeda works to rebuild after the U.S. Navy SEAL raid that killed Osama bin Laden on May 1, Bruce Riedel writes that the organization’s inner circle has undergone a major metamorphosis, thanks to the recent surfacing of the long-lost al Qaeda Iran cadre. According to Riedel, this group, which includes a major block of al Qaeda’s founding fathers, will be a defining element in the new post-Bin Laden al Qaeda.