Senior U.S. officials decline to discuss it, but it’s clear there were no U.S. Marines protecting U.S. Ambassador to Libya Chris Stevens and his beleaguered staff at the Benghazi consulate Tuesday night. Marines are routinely posted to U.S. diplomatic outposts around the world, but the “interim” facility in Benghazi apparently was defended only by a handful of U.S. security officers and local hires. The Marines have let it be known that the two unidentified U.S. officials who died at Benghazi were not Marines.