WASHINGTON — It has now been just over a year since a group of terrorists overwhelmed our diplomatic post in Benghazi, Libya, and killed four Americans, one of whom was our ambassador, two of whom were former SEALs. Today, we know little more than we did then, despite the bluster of the then-Secretary of State Hillary Rodham Clinton and of President Barack Obama, who has gone on to other problems. Incidentally, Clinton is now in retirement and ceaselessly roaming the country lecturing for enormous honoraria. She is, according to the press, the “inevitable” Democratic nominee, and, according to the likes of Time magazine’s Joe Klein, the most talented and credentialed candidate for the presidency in “many a moon.”