Quarter of a Million Have Fled Syria

Most refugees are in Turkey and Jordan

The United Nations says the number of refugees who have fled Syria has reached more than 250,000, calling the humanitarian problems sparked by the conflict "our biggest crisis."

The U.N. refugee agency said Tuesday there are more than 85,000 Syrians registered in Jordan, nearly 78,500 in Turkey, 67,000 in Lebanon and 22,500 in Iraq.