NEW YORK, Sept 29 — At the 70th annual session of the United Nations General Assembly, world leaders addressed the war in Syria, which has contributed to the rise to the Islamic State group (IS) and a global migrant crisis. — The New York Times

US President Barack Obama addresses attendees during a plenary meeting of the United Nations Sustainable Development Summit at the United Nations headquarters in Manhattan, New York September 27, 2015. — Reuters pic