UN Launches Its Largest Appeal, Seeking Humanitarian Aid for Syrians
Looking for $5 billion
The United Nations has launched the largest appeal in its history - seeking $5bn (£3.2bn; 3.7bn euros) for humanitarian aid to Syria.
The UN estimates more than 10 million Syrians - half the population - will need help by the end of the year.
As many as four million children are in need of urgent humanitarian assistance, the UN's children's agency says.
