Pentagon leaders may never be satisfied with the reliability and readiness of the U.S. nuclear command and control system despite continuing efforts to identify and respond to cyber vulnerabilities, the head of U.S. Strategic Command said today. STRATCOM is reviewing its legacy nuclear command and control system to determine if there are critical vulnerabilities that exist in the system, Gen. Robert Kehler said today, adding that the review likely will not be complete for some time and that the results...