Syrian children playing in the snow at Arsal refugee camp
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UN urges aid for Syria displaced

More than two million Syrians have fled to neighbouring Lebanon, Jordan, Turkey and Iraq - and more than half of those refugees are children.

The UN's biggest ever appeal for aid has launched, with the aim of helping the nearly three-quarters of the Syrian population it says will need aid in 2014.

More than two million Syrians have fled to neighbouring Lebanon, Jordan, Turkey and Iraq - and more than half of those refugees are children.

Jim Muir reports from the Lebanese border town of Arsal.