Leadership: Two of the most important national security positions may be soon held by a diplomat who helped perpetrate a Benghazi-gate lie and a senator who has voted against every major defense system in the last 25 years. Secretary of State Hillary Rodham Clinton arrived in Australia on Tuesday before a summit about deepening defense links between Australia and the U.S. as our dwindling forces pivot to the Pacific Rim. Of course, Wednesday hearings on Benghazi have nothing to do with her getting as far from Washington, D.C., as possible. She'll be conveniently unavailable to testify on the terrorist attack...