Is the Nusra Front Poised to Become a Sunni Hizballah?

A regional offshoot of al-Qaeda known as the Nusra Front currently controls a swath of territory that extends from northwestern Syria, through Lebanon, into the area east of the Golan Heights. Viewing Islamic State and Syrian rebel groups as rivals, it sometimes cooperates with them and sometimes attacks them. It has recently been fighting the Shiite Hizballah, which it may well hope to replace as the dominant Islamist militia in Lebanon. And then? Jonathan Spyer speculates: