Well who benefits most by the destruction of that pipeline? Assad. Did his ally Vladimir Putin arrange the attack? Did he manage to use Ansar al-Shariah or simply blame them?
Despite Rush's comparisons.. Benghazi is way beyond the class of election-year political calculations, Watergate, and Iraqi WMD.. think USS Scorpion one of our atomic submarines.
When the Soviets destroyed our USS Scorpion and all 99 men aboard both LBJ and Nixon covered up the attack (1968 and beyond). There will never be any truth from Washington no matter who is president if Putin arranged the attack in Benghazi.