evidence: Following the victory of the Syrian regime and their Hezbollah counterparts at al-Qusayr in early June 2013, Sunni extremist groups began conducting escalatory reprisal attacks against Hezbollah in Lebanon. In the months since, the predominantly Sunni Lebanese border town of Arsal, located directly across the border from the Qalamoun area where most of the surviving rebel fighters from al-Qusayr fled, has functioned as the primary staging area and support zone for these attacks into Lebanon. As a result, nearby Hezbollah strongholds in the Bekaa Valley are on high alert for potential car bombs and cross-border rocket attacks originating from elements in Arsal, forcing Hezbollah on the defensive in Lebanon. The Lebanese Army, meanwhile, has taken concrete measures to mitigate the threat posed by Syria to Lebanon via Arsal. Since the beginning of the Syrian conflict nearly three years ago, Lebanon’s Arsal, a lone enclave in the eastern Bekaa Valley for Sunnis sympathetic to the Syrian uprising, has served as a crucial logistical support network in the struggle against the Assad regime. Located in the northeastern corner of Lebanon on the border with Syria, the town lies nearly equidistant from Hezbollah’s Bekaa Valley strongholds of Baalbek and Hermel. In spite of its isolated position, the geostrategic relevance of Arsal lies in its close proximity across the border from the contested Qalamoun mountain range. Qalamoun is an opposition stronghold in western Syria between Homs and Damascus that is currently the site of an intense battle for control of key supply lines along the M5 highway.