Syrian air strikes in the jihadist-held **rthern city of Raqa on Saturday killed 35 people, including 15 Islamic State (IS) members, a monitoring group said. "Regime warplanes carried out eight air strikes targeting Raqa and its surroundings," said Syrian Observatory for Human Rights director Rami Abdel Rahman. The strikes come amid a stepped-up campaign by President Bashar al-Assad's regime targeting IS positions in **rthern and eastern Syria. The Islamic State group first emerged in Syria's war in late spring 2013, when it was named the Islamic State of Iraq and the Levant (ISIL).