While the Iraq-Syria border was witnessing the first armed confrontation pitting Sunni jihadists against Iraqi and Syrian soldiers, leaving scores of people dead, a wide stretch of border between Lebanon and Syria was the scene of direct and unprecedented contact between Shiite Hezbollah militants and Sunni jihadists belonging to Jabhat al-Nusra. This new and serious development is likely to have serious repercussions in the coming weeks. There are several theories about how this situation came to pass.
One week prior, amid sporadic clashes on both sides of the northeastern border of Lebanon and Syria, regular Syrian army forces had redeployed in al-Nabk, near the Lebanese border. Official Lebanese sources confirmed the event. On first glance, the redeployment would appear to be unremarkable given the movement of Syrian army units since the beginning of the civil war almost two years ago, but upon closer inspection, the seriousness of the maneuver becomes apparent.