Libya’s slow-burn conflict swept into two of its most important oil facilities late last week, shutting ports and triggering a drop in crude output in the OPEC nation. The attacks in the oil crescent were a setback to a military commander based in Libya’s east who wants — with the help of allies including Russia and Egypt — to expand his influence all the way to the capital, Tripoli. Here’s a look at why they matter for a country that has collapsed into fiefdoms since the ouster of Muammar Qaddafi. Who’s fighting whom? The offensive on Es Sider, Libya’s largest export terminal for oil, and Ras Lanuf, its biggest refinery, began March 3 and was led by the Benghazi Defense Brigades. The militia is mainly composed of Islamist-leaning rebels and former army […]