Kurdish fighters from the Popular Protection Units (YPG), wearing vests with the YPG logo, stand along a street in Aleppo's Sheikh Maqsoud neighborhood, June 19, 2013. Kurdish fighters from the Popular Protection Units (YPG) joined the Free Syrian Army to fight against forces loyal to Syria's President Bashar al-Assad. Picture taken June 19, 2013. REUTERS/Nour Kelze (SYRIA - Tags: POLITICS CIVIL UNREST CONFLICT)