After his militia attacked the Libyan parliament in Tripoli Sunday, former Gen. Khalifa Haftar said he was acting to drive out Islamist extremists and replace them with a 60-member constituent assembly. Friday, Hafter’s brigade assaulted Islamist militias in the eastern city of Benghazi. A further attack on the town’s military air base was reported Monday. Since Qaddari’s one-man rule was overthrow in 2011, Libya has been in a state of chaos, tossed among warring militias, with no functioning government and three successive prime ministers.