Returnees from north Sudan wait in line for World Food Program (WFP) staff to start distributing food in Wanjak near Aweil in the northern Bahr el Ghazal state in south Sudan December 30, 2010. People from Sudan's oil-producing south are widely expected to vote to split away to form Africa's newest nation in a referendum scheduled to take place on January 9, 2011 that was promised in a 2005 peace deal ending a civil war between north and south. REUTERS/Goran Tomasevic (SUDAN - Tags: POLITICS SOCIETY) 

Boys who returned from north Sudan look at the World Food Program (WFP) food distribution in Wanjak near Aweil in the northern Bahr el Ghazal state in south Sudan December 30, 2010. People from Sudan's oil-producing south are widely expected to vote to split away to form Africa's newest nation in a referendum scheduled to take place on January 9, 2011 that was promised in a 2005 peace deal ending a civil war between north and south. REUTERS/Goran Tomasevic (SUDAN - Tags: POLITICS SOCIETY) 

Young returnees from north Sudan smile in Aweil in the northern Bahr el Ghazal state in south Sudan December 29, 2010. People from Sudan's oil-producing south are widely expected to vote to split away to form Africa's newest nation in a referendum scheduled to take place on January 9, 2011 that was promised in a 2005 peace deal ending a civil war between north and south. REUTERS/Goran Tomasevic (SUDAN - Tags: POLITICS SOCIETY) 

Returnees from north Sudan wait in line for World Food Program (WFP) staff to start distributing food in Aweil in the northern Bahr el Ghazal state in south Sudan December 29, 2010. People from Sudan's oil-producing south are widely expected to vote to split away to form Africa's newest nation in a referendum scheduled to take place on January 9, 2011 that was promised in a 2005 peace deal ending a civil war between north and south. REUTERS/Goran Tomasevic (SUDAN - Tags: POLITICS SOCIETY) 

Female returnees from north Sudan walk to collect food being distributed by World Food Program (WFP) staff in Aweil in the northern Bahr el Ghazal state in south Sudan December 29, 2010. People from Sudan's oil-producing south are widely expected to vote to split away to form Africa's newest nation in a referendum scheduled to take place on January 9, 2011 that was promised in a 2005 peace deal ending a civil war between north and south. REUTERS/Goran Tomasevic (SUDAN - Tags: POLITICS SOCIETY IMAGES OF THE DAY) 

Returnees from north Sudan wait for World Food Program (WFP) staff to start distributing food in Aweil in the northern Bahr el Ghazal state in south Sudan December 29, 2010. People from Sudan's oil-producing south are widely expected to vote to split away to form Africa's newest nation in a referendum scheduled to take place on January 9, 2011 that was promised in a 2005 peace deal ending a civil war between north and south. REUTERS/Goran Tomasevic (SUDAN - Tags: POLITICS SOCIETY) 

A returnee from north Sudan smokes as he waits for World Food Program (WFP) staff to start distributing food in Aweil in the northern Bahr el Ghazal state in south Sudan December 29, 2010. People from Sudan's oil-producing south are widely expected to vote to split away to form Africa's newest nation in a referendum scheduled to take place on January 9, 2011 that was promised in a 2005 peace deal ending a civil war between north and south. REUTERS/Goran Tomasevic (SUDAN - Tags: POLITICS SOCIETY) 

Returnees from north Sudan wait in line for World Food Program (WFP) staff to start distributing food in Aweil in the northern Bahr el Ghazal state in south Sudan December 29, 2010. People from Sudan's oil-producing south are widely expected to vote to split away to form Africa's newest nation in a referendum scheduled to take place on January 9, 2011 that was promised in a 2005 peace deal ending a civil war between north and south.
REUTERS/Goran Tomasevic (SUDAN - Tags: POLITICS IMAGES OF THE DAY) 

Returnees from north Sudan wait in line for World Food Program (WFP) staff to start distributing food in Aweil in the northern Bahr el Ghazal state in south Sudan December 29, 2010. People from Sudan's oil-producing south are widely expected to vote to split away to form Africa's newest nation in a referendum scheduled to take place on January 9, 2011 that was promised in a 2005 peace deal ending a civil war between north and south. REUTERS/Goran Tomasevic (SUDAN - Tags: POLITICS SOCIETY) 

Returnees from north Sudan wait for World Food Program (WFP) staff to start distributing food in Aweil in the northern Bahr el Ghazal state in south Sudan December 29, 2010. People from Sudan's oil-producing south are widely expected to vote to split away to form Africa's newest nation in a referendum scheduled to take place on January 9, 2011 that was promised in a 2005 peace deal ending a civil war between north and south. REUTERS/Goran Tomasevic (SUDAN - Tags: POLITICS SOCIETY) 

Boys smile as World Food Program (WFP) staff distribute food to returnees from north Sudan in Wanjak near Aweil in the northern Bahr el Ghazal state in south Sudan December 30, 2010. People from Sudan's oil-producing south are widely expected to vote to split away to form Africa's newest nation in a referendum scheduled to take place on January 9, 2011 that was promised in a 2005 peace deal ending a civil war between north and south.
REUTERS/Goran Tomasevic (SUDAN - Tags: POLITICS SOCIETY) 

Returnees from north Sudan wait in line for World Food Program (WFP) staff to start distributing food in Wanjak, near Aweil, in the northern Bahr el Ghazal state in south Sudan December 30, 2010. People from Sudan's oil-producing south are widely expected to vote to split away to form Africa's newest nation in a referendum scheduled to take place on January 9, 2011 that was promised in a 2005 peace deal ending a civil war between north and south. REUTERS/Goran Tomasevic (SUDAN - Tags: POLITICS SOCIETY) 

Returnees from north Sudan wait for World Food Program (WFP) staff to start distributing food in Wanjak near Aweil in the northern Bahr el Ghazal state in south Sudan December 30, 2010. People from Sudan's oil-producing south are widely expected to vote to split away to form Africa's newest nation in a referendum scheduled to take place on January 9, 2011 that was promised in a 2005 peace deal ending a civil war between north and south.
REUTERS/Goran Tomasevic (SUDAN - Tags: POLITICS SOCIETY) 

Returnees from north Sudan wait in line for the World Food Program (WFP) staff to start distributing food in Wanjak near Aweil in the northern Bahr el Ghazal state in south Sudan December 30, 2010. People from Sudan's oil-producing south are widely expected to vote to split away to form Africa's newest nation in a referendum scheduled to take place on January 9, 2011 that was promised in a 2005 peace deal ending a civil war between north and south. REUTERS/Goran Tomasevic (SUDAN - Tags: POLITICS SOCIETY) 

A young returnee from north Sudan watches as World Food Program (WFP) staff distribute food in Aweil in the northern Bahr el Ghazal state in south Sudan December 29, 2010. People from Sudan's oil-producing south are widely expected to vote to split away to form Africa's newest nation in a referendum scheduled to take place on January 9, 2011 that was promised in a 2005 peace deal ending a civil war between north and south. REUTERS/Goran Tomasevic (SUDAN - Tags: POLITICS SOCIETY) 

Returnees from north Sudan wait in line to receive food from the World Food Program (WFP) staff in Wanjak near Aweil in the northern Bahr el Ghazal state in south Sudan December 30, 2010. People from Sudan's oil-producing south are widely expected to vote to split away to form Africa's newest nation in a referendum scheduled to take place on January 9, 2011 that was promised in a 2005 peace deal ending a civil war between north and south. REUTERS/Goran Tomasevic (SUDAN - Tags: POLITICS SOCIETY FOOD) 

Returnees from north Sudan wait in line for World Food Program (WFP) staff to start distributing food in Wanjak near Aweil in the northern Bahr el Ghazal state in south Sudan December 30, 2010. People from Sudan's oil-producing south are widely expected to vote to split away to form Africa's newest nation in a referendum scheduled to take place on January 9, 2011 that was promised in a 2005 peace deal ending a civil war between north and south. REUTERS/Goran Tomasevic (SUDAN - Tags: POLITICS SOCIETY) 

A returnee from north Sudan carries a sack of flour distributed by World Food Program (WFP) staff in Aweil in the northern Bahr el Ghazal state in south Sudan December 29, 2010. People from Sudan's oil-producing south are widely expected to vote to split away to form Africa's newest nation in a referendum scheduled to take place on January 9, 2011 that was promised in a 2005 peace deal ending a civil war between north and south. REUTERS/Goran Tomasevic (SUDAN - Tags: POLITICS SOCIETY) 

World Food Program (WFP) staff unload food to be distributed to returnees from north Sudan in Aweil in the northern Bahr el Ghazal state in south Sudan December 29, 2010. People from Sudan's oil-producing south are widely expected to vote to split away to form Africa's newest nation in a referendum scheduled to take place on January 9, 2011 that was promised in a 2005 peace deal ending a civil war between north and south. REUTERS/Goran Tomasevic (SUDAN - Tags: POLITICS SOCIETY) 

Returnees from north Sudan wait in line for World Food Program (WFP) staff to start distributing food in Wanjak near Aweil in the northern Bahr el Ghazal state in south Sudan December 30, 2010. People from Sudan's oil-producing south are widely expected to vote to split away to form Africa's newest nation in a referendum scheduled to take place on January 9, 2011 that was promised in a 2005 peace deal ending a civil war between north and south.
REUTERS/Goran Tomasevic (SUDAN - Tags: POLITICS SOCIETY) 

Young returnees from north Sudan play in Aweil in the northern Bahr el Ghazal state in south Sudan December 29, 2010. People from Sudan's oil-producing south are widely expected to vote to split away to form Africa's newest nation in a referendum scheduled to take place on January 9, 2011 that was promised in a 2005 peace deal ending a civil war between north and south. REUTERS/Goran Tomasevic (SUDAN - Tags: POLITICS SOCIETY) 

A boy who returned from north Sudan looks at the World Food Program (WFP) food distribution in Wanjak near Aweil in the northern Bahr el Ghazal state in south Sudan December 30, 2010. People from Sudan's oil-producing south are widely expected to vote to split away to form Africa's newest nation in a referendum scheduled to take place on January 9, 2011 that was promised in a 2005 peace deal ending a civil war between north and south.
REUTERS/Goran Tomasevic (SUDAN - Tags: POLITICS SOCIETY)