Major challenge for Afghanistan as thousandsof refugees who fled war forced to return to native country.Six million of the world's refugees are from Afghanistan, and around 1.4 million of them can be found in neighbouring Iran.
But now thousands are now being forced back to Afghanistan.
Coping with the new arrivals is just one of the challenges Afghanistan faces as it prepares for foreign forces to leave next year.
By Al-Jazeera
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