The deadly insurgency has forced hundreds of thousands of people to leave Mogadishu in recent months, according to the United Nations, prompting warnings of an unprecedented humanitarian disaster.

  

Aid groups have said that insecurity is choking off efforts to deliver humanitarian supplies to those affected.

  

Numerous bids to restore stability to the Horn of Africa nation since the 1991 ouster of dictator Mohamed Siad Barre have failed because of clan warfare and unrest.