U.S. Strategic Command has approved a new joint concept to support major decisions about doctrine and resources for cyberspace operations, a key step toward final approval of the document by the military's top officer. The Joint Concept for Cyberspace, designed to help military forces grapple with fundamental questions about cyberwarfare in the 2020s, now bears the signature of STRATCOM chief Gen. Robert Kehler and will ultimately land on the desk of Chairman of the Joint Chiefs of Staff Gen. Martin...