Commentary As we try to understand what happened on Aug. 26, 2021, at Kabul Airport with the American loss of life, some disturbing facts are coming to light. In a military retrograde (withdrawal in civilian terms), especially when conducted under duress, security is one of the primary planning factors.  With the deadly attacks that took place at the Abbey Gate to the airport and close by Baron Hotel at Kabul, it now turns out that it was not American forces that controlled the perimeter of the Airport, it was Taliban elements. This is very discomforting and violates basic principles of security in military planning at the tactical level.  A logical question arises, who allowed or directed this concession or constraint? U.S. Military forces should have not only decisively controlled the perimeter and the access points, but they should have also established a security buffer zone from two to ten miles …