Lebanon : Hezbollah leader Hassan Nasrallah is scheduled to hold a large rally . It 's unclear if Nasrallah will respond to the bombing , which appeared to target Hezbollah , and whether , if so , his words will provoke more anger against the movement and its involvement in Syria 's civil war . The Lebanese government says a car bomb caused the blast . An unknown group claims responsibility in a YouTube video . The city is a Shia stronghold .
Lebanon : Hezbollah leader Hassan Nasrallah is scheduled to hold a large rally . The Lebanese government says a car bomb caused the blast . An unknown group claims responsibility in a YouTube video . The city is a Shia stronghold .