The Es Sider oil export terminal in Libya was shut down and loadings at another one, Ras Lanuf, were suspended today after clashes between the Libyan national Army and the Benghazi Defense Brigades, Reuters reports, citing local sources. At least one oil storage tank in Ras Lanuf has been set on fire, but oilfields have not been affected by the clashes yet, the sources said. According to one of them, from the military, the first attack was launched by the BDB—an Islamist group and long-standing foe of the LNA—as it attempted to take…