Sunni gunmen patrol an empty street leading to a Shiite neighborhood in Beirut on Monday, Oct. 22, 2012, after overnight clashes between Sunni and Shiite gunmen. (AP Photo/Hussein Malla)

Photo by: Hussein Malla

Sunni gunmen patrol an empty street leading to a Shiite neighborhood in Beirut on Monday, Oct. 22, 2012, after overnight clashes between Sunni and Shiite gunmen. (AP Photo/Hussein Malla)