Syria Seen as Most Dire Refugee Crisis in a Generation --- KILIS, Turkey — As the boom of shelling resounded along Turkey’s border with Syria here on a recent afternoon, Zakaria Deeb had nowhere left to run. -- Nearly three years of bloody civil war in Syria have created what the United Nations, governments and international humanitarian organizations describe as the most challenging refugee crisis in a generation — bigger than the one unleashed by the Rwandan genocide and laden with the sectarianism of the Balkan wars. With no end in sight in the conflict and with large parts of Syria already destroyed, governments and organizations are quietly preparing for the refugee crisis to last years. - nytimes