Jihadists and allies breach Syria's second largest city Jihadists and their Turkish-backed allies reached Syria's second city of Aleppo Friday, as they pressed a lightning offensive against forces of the Iranian- and Russian-backed government. The fighting is some of the deadliest in years, with 255 people killed, according to the Syrian Observatory for Human Rights. Most of the dead have been combatants but the toll also includes 24 civilians, most killed in Russian air strikes.