Its hard to have a successful state in Libya. Since the war against Gadaffi, militias continue to exist. They were never disarmed. Underlying this is the division of Libyan society into numerous clans.
Christopher S. Chivvis reports in Foreign Policy on Libya’s Downward Spiral:
Initial efforts to disarm, demobilize, and reintegrate these militias into a centralized Libyan army under the authority of Libya’s leadership were quickly abandoned … small-scale turf wars between militias and struggles over access to smuggling routes in Libya’s distant southern reaches, a new kind of violence had begun to emerge over the summer.
This violence has come in three forms:
First, attacks against Libyan government officials and buildings, both in Benghazi and in Tripoli. Car bombings and small-armed assaults on government buildings indicated a different kind of threat than militia turf wars.
Second, more aggressive actions by radical Islamist militias, who recently destroyed a number of Sufi shrines charging that Sufi practices are un-Islamic.
Third, attacks against diplomats, including an attack against a U.S. diplomatic vehicle in Tripoli and an attack on the British ambassador’s car in Benghazi. Until this week, these attacks looked like isolated incidents. Now they appear in a different light.