The number of Syrians who have fled their country has surpassed 3 million, the United Nations said Thursday, appealing for "massive" support to help host countries cope with the growing influx. UN Refugee Agency (UNHCR) High Commissioner Antonio Guterres said that the agency had registered more than 3 million Syrian refugees across the Middle East in addition to thousands more who have fled Syria and have gone unregistered. "Without much more massive support, the international community cannot take for granted that the countries will be able to go on and accept hundreds of thousands or millions of Syrian refuges," dpa quoted Guterres as saying in the Jordanian capital Amman.