People from Karamojong tribe wait in line to vote at a polling station during the presidential elections in a village near town of Kaabong in Karamoja region, Uganda, February 18, 2016. Ugandans start casting votes on Thursday to decide whether to give Yoweri Museveni, in power for three decades, another term in office. REUTERS/Goran Tomasevic 

People from Karamojong tribe wait in line to vote at a polling station during the presidential elections in a village near town of Kaabong in Karamoja region, Uganda, February 18, 2016. Ugandans start casting votes on Thursday to decide whether to give Yoweri Museveni, in power for three decades, another term in office, 2016. REUTERS/Goran Tomasevic 

People from Karamojong tribe wait in line to vote at a polling station during the presidential elections in a village near town of Kaabong in Karamoja region, Uganda, February 18, 2016. Ugandans start casting votes on Thursday to decide whether to give Yoweri Museveni, in power for three decades, another term in office. REUTERS/Goran Tomasevic 

Karamojong tribesmen wait in line to cast their ballots at a polling station during the presidential elections in a village near town of Kaabong in Karamoja region, Uganda, February 18, 2016. Ugandans start casting votes on Thursday to decide whether to give Yoweri Museveni, in power for three decades, another term in office. REUTERS/Goran Tomasevic 

A police officer casts his ballot at a polling station during elections in a village near the town of Kaabong in Karamoja region, Uganda February 18, 2016. REUTERS/Goran Tomasevic 

People from Karamojong tribe wait in line to vote at a polling station during elections in town of Kaabong in Karamoja region, Uganda February 18, 2016. REUTERS/Goran Tomasevic 

A Karamojong tribesman sits as he waits to vote at a polling station during elections in a village near the town of Kaabong in Karamoja region, Uganda February 18, 2016. REUTERS/Goran Tomasevic TPX IMAGES OF THE DAY

People from Karamojong tribe wait in line to vote at a polling station during elections in a village near the town of Kaabong in Karamoja region, Uganda February 18, 2016. REUTERS/Goran Tomasevic 

People from Karamojong tribe wait in line to vote at a polling station during elections in a village near the town of Kaabong in Karamoja region, Uganda February 18, 2016. REUTERS/Goran Tomasevic 

People from Karamojong tribe wait in line to vote at a polling station during elections in a village near the town of Kaabong in Karamoja region, Uganda February 18, 2016. REUTERS/Goran Tomasevic 

People from Karamojong tribe wait in line to vote at a polling station during elections in a village near the town of Kaabong in Karamoja region, Uganda February 18, 2016. REUTERS/Goran Tomasevic 

People from Karamojong tribe wait in line to vote at a polling station during elections in a village near the town of Kaabong in Karamoja region, Uganda February 18, 2016. REUTERS/Goran Tomasevic 

A woman pushes a Karamojong tribesman in a wheelchair at a polling station during elections in a village near the town of Kaabong in Karamoja region, Uganda February 18, 2016. REUTERS/Goran Tomasevic 

A Karamojong tribeswoman casts her ballot at a polling station during the presidential elections in a village near Kaabong in Karamoja region, Uganda, February 18, 2016. Ugandans start casting votes on Thursday to decide whether to give Yoweri Museveni, in power for three decades, another term in office. REUTERS/Goran Tomasevic 

People from Karamojong tribe wait in line to vote in front of a polling station during the presidential elections in a village near town of Kaabong in Karamoja region, Uganda, February 18, 2016. Ugandans start casting votes on Thursday to decide whether to give Yoweri Museveni, in power for three decades, another term in office. REUTERS/Goran Tomasevic 

Karamojong tribeswoman casts her ballot at a polling station during the presidential elections in Kaabong in Karamoja region, Uganda, February 18, 2016. Ugandans start casting votes on Thursday to decide whether to give Yoweri Museveni, in power for three decades, another term in office. REUTERS/Goran Tomasevic 

People from Karamojong tribe wait in line to vote in front of a polling station during the presidential elections in a village near town of Kaabong in Karamoja region, Uganda, February 18, 2016. Ugandans start casting votes on Thursday to decide whether to give Yoweri Museveni, in power for three decades, another term in office. REUTERS/Goran Tomasevic 

A ballot box is seen in a polling station just before people start voting during elections in Kaabong in Karamoja region, Uganda February 18, 2016. Ugandans start casting votes on Thursday to decide whether to give Yoweri Museveni, in power for three decades, another term in office. REUTERS/Goran Tomasevic 

A man casts his ballot in a polling station during elections in Kaabong in Karamoja region, Uganda February 18, 2016. Ugandans start casting votes on Thursday to decide whether to give Yoweri Museveni, in power for three decades, another term in office. REUTERS/Goran Tomasevic TPX IMAGES OF THE DAY

An electoral commission worker sits in a polling station just before people start voting during elections in Kaabong in Karamoja region, Uganda February 18, 2016. Ugandans start casting votes on Thursday to decide whether to give Yoweri Museveni, in power for three decades, another term in office. REUTERS/Goran Tomasevic 

A Karamojong tribe boy plays with a toy decorated with election posters in town of Kaabong in Karamoja region, Uganda February 17, 2016. REUTERS/Goran Tomasevic 

A Karamojong tribesman stands in town of Kaabong in Karamoja region, Uganda February 17, 2016. REUTERS/Goran Tomasevic 

Karamojong tribesmen stand in town of Kaabong in Karamoja region, Uganda February 17, 2016. REUTERS/Goran Tomasevic 

A man passes by a poster of Uganda's President Yoweri Museveni and a poster of opposition leader Kizza Besigye in town of Kaabong in Karamoja region, Uganda, February 17, 2016. REUTERS/Goran Tomasevic 

People collect water from a dry river bed in Kaabong in Karamoja region, Uganda February 17, 2016. REUTERS/Goran Tomasevic 

Karamojong tribesmen stand in town of Kaabong in Karamoja region, Uganda February 17, 2016. REUTERS/Goran Tomasevic 

Karamojong tribesmen stand in town of Kaabong in Karamoja region, Uganda February 17, 2016. REUTERS/Goran Tomasevic 

Women carry their belongings outside town of Kaabong in Karamoja region, Uganda February 17, 2016. REUTERS/Goran Tomasevic 

People bath in a dry river bed in Kaabong in Karamoja region, Uganda, February 17, 2016. REUTERS/Goran Tomasevic 

Karamojong tribe boys bath in a dry riverbed in town of Kaabong in Karamoja region, Uganda February 17, 2016. REUTERS/Goran Tomasevic 

Karamojong tribesmen stand in town of Kaabong in Karamoja region, Uganda February 17, 2016. REUTERS/Goran Tomasevic TPX IMAGES OF THE DAY 

A detail of the fossil remains of the jaw from a skull of a tree-climbing ape from about 20 million years ago in Uganda's Karamoja region is presented at a news conference in Paris September 19, 2011. Scientists discovered the remains on July 18 while looking for fossils in the remnants of an extinct volcano in Karamoja, a semi-arid region in Uganda's northeastern corner. REUTERS/Charles Platiau (FRANCE - Tags: EDUCATION SCIENCE TECHNOLOGY) 

Brigitte Senut (L), a professor at the Musee National d'Histoire Naturelle, and Martin Pickford (2ndL), a palaeontologist at the College de France, present the fossil remains of the jaw from a skull of a tree-climbing ape from about 20 million years ago in Uganda's Karamoja region, to the media at a news conference in Paris September 19, 2011. Scientists discovered the remains on July 18 while looking for fossils in the remnants of an extinct volcano in Karamoja, a semi-arid region in Uganda's northeastern corner. REUTERS/Charles Platiau (FRANCE - Tags: EDUCATION SCIENCE TECHNOLOGY) 

A detail show the hands of Martin Pickford, a palaeontologist at the College de France, as he holds the fossil remains of the jaw from a skull of a tree-climbing ape from about 20 million years ago in Uganda's Karamoja region, at a news conference in Paris September 19, 2011. Scientists discovered the remains on July 18 while looking for fossils in the remnants of an extinct volcano in Karamoja, a semi-arid region in Uganda's northeastern corner. REUTERS/Charles Platiau (FRANCE - Tags: EDUCATION SCIENCE TECHNOLOGY) 

Brigitte Senut (R), a professor at the Musee National d'Histoire Naturelle, stands by Martin Pickford (L), a palaeontologist at the College de France, as she holds the fossil remains of the jaw from a skull of a tree-climbing ape from about 20 million years ago in Uganda's Karamoja region, at a news conference in Paris September 19, 2011. Scientists discovered the remains on July 18 while looking for fossils in the remnants of an extinct volcano in Karamoja, a semi-arid region in Uganda's northeastern corner. REUTERS/Charles Platiau (FRANCE - Tags: EDUCATION SCIENCE TECHNOLOGY) 

A detail show the hand of Martin Pickford, a palaeontologist at the College de France, as he holds the fossil remains of the jaw from a skull of a tree-climbing ape from about 20 million years ago in Uganda's Karamoja region, at a news conference in Paris September 19, 2011. Scientists discovered the remains on July 18 while looking for fossils in the remnants of an extinct volcano in Karamoja, a semi-arid region in Uganda's northeastern corner. REUTERS/Charles Platiau (FRANCE - Tags: EDUCATION SCIENCE TECHNOLOGY) 

Martin Pickford, a palaeontologist at the College de France, holds the fossil remains of the jaw from a skull of a tree-climbing ape from about 20 million years ago in Uganda's Karamoja region, at a news conference in Paris September 19, 2011. Scientists discovered the remains on July 18 while looking for fossils in the remnants of an extinct volcano in Karamoja, a semi-arid region in Uganda's northeastern corner. REUTERS/Charles Platiau (FRANCE - Tags: SCIENCE TECHNOLOGY EDUCATION) 

Dr. Martin Pickford, a paleontologist from the College de France in Paris, displays a sub-complete skull of a fossil ape found in Karamoja region, northeast of Uganda's capital Kampala, during a news conference in Kampala August 2, 2011. Ugandan and French scientists have discovered a fossil of a skull of a tree-climbing ape from about 20 million years ago in Uganda's Karamoja region, the team said on Tuesday. REUTERS/Stringer (UGANDA - Tags: ANIMALS SCI TECH) 

Images of a sub-complete skull of a fossil ape are projected on a wall during a news conference in Uganda's capital Kampala August 2, 2011. Ugandan and French scientists have discovered a fossil of a skull of a tree-climbing ape from about 20 million years ago in Uganda's Karamoja region, the team said on Tuesday. REUTERS/Stringer (UGANDA - Tags: ANIMALS SCI TECH) 

Dr. Martin Pickford, a paleontologist from the College de France in Paris, displays a sub-complete skull of a fossil ape found in Karamoja region, northeast of Uganda's capital Kampala, during a news conference in Kampala August 2, 2011. Ugandan and French scientists have discovered a fossil of a skull of a tree-climbing ape from about 20 million years ago in Uganda's Karamoja region, the team said on Tuesday. REUTERS/Stringer (UGANDA - Tags: ANIMALS SCI TECH) 

Dr. Martin Pickford displays a sub-complete skull of a fossil ape found in Karamoja region, northeast of Uganda's capital Kampala, during a news conference in Kampala August 2, 2011. Ugandan and French scientists have discovered a fossil of a skull of a tree-climbing ape from about 20 million years ago in Uganda's Karamoja region, the team said on Tuesday. REUTERS/Stringer (UGANDA - Tags: ANIMALS SCI TECH IMAGES OF THE DAY) 

Dr. Martin Pickford displays a sub-complete skull of a fossil ape found in Karamoja region, northeast of Uganda's capital Kampala, during a news conference in Kampala August 2, 2011. Ugandan and French scientists have discovered a fossil of a skull of a tree-climbing ape from about 20 million years ago in Uganda's Karamoja region, the team said on Tuesday. REUTERS/Stringer (UGANDA - Tags: ANIMALS SCI TECH) 

A Karamojong mother waits for the immunisation of her child in Moroto district 561 km (336 miles) north-east of Uganda's capital Kampala October 1, 2008. Some 100 children under 5 years of age dies weekly from preventable diseases in Uganda Karamoja region UNICEF report says. REUTERS/James Akena (UGANDA) 

A Karamojong woman waits for the immunisation of her child in Moroto district 561 km (336 miles) north-east of Uganda's capital Kampala October 1, 2008. Some 100 children under 5 years of age dies weekly from preventable diseases in Uganda Karamoja region UNICEF report says. REUTERS/James Akena (UGANDA) 

A health worker treats a Karamojong child at Moroto hospital 561 km (336 miles) north-east of Uganda's capital Kampala October 1, 2008. Some 100 children under 5 years of age dies weekly from preventable diseases in Uganda Karamoja region UNICEF report says. REUTERS/James Akena (UGANDA) 

A Ugandan health worker immunises a child October 1, 2008 in Moroto district, 561 km (336 miles) north-east of capital Kampala. About 100 children under 5 years of age dies weekly from preventable diseases in Uganda Karamoja region UNICEF report says. REUTERS/James Akena (UGANDA) 

Women winnow sorghum at an Oxfam-run grain bank in the Karamoja region, 700km (420 miles) northeast of Kampala, May 20, 2008. Picture taken 20 May, 2008. REUTERS/James Akena (UGANDA) 

A mother holds her child as they wait for malnutrition treatment at Matany hospital in Uganda's Karamoja region, 700km (420 miles) northeast of the capital Kampala, May 21, 2008. Global price rises and floods last year have caused severe food shortages in northeast Uganda, where nearly 30 people have died and some have been reduced to eating rats, officials said. REUTERS/James Akena (UGANDA) 

A child waits in his mother's arms for malnutrition treatment at Matany hospital in Uganda's Karamoja region, 700 km (420 miles) northeast of the capital Kampala, May 21, 2008. Global price rises and floods last year have caused severe food shortages in northeast Uganda, where nearly 30 people have died and some have been reduced to eating rats, officials said. REUTERS/James Akena (UGANDA) 

A malnourished child is fed a meal in Uganda's Karamoja region, 700km (420 miles) northeast of Capital Kampala, were over one million people face starvation due to prolonged drought, May 19, 2008. Karamoja is located in the remote and least developed semi arid part of Uganda. REUTER/James Akena (UGANDA) 

A woman picks wild vegetable in Uganda's Karamoja region, 700km (420 miles) northeast of Capital Kampala, were over one million people face starvation due to prolonged drought, May 19, 2008. Karamoja is located in the remote and least developed semi arid part of Uganda. REUTER/James Akena (UGANDA) 

A child stares at the camera in Uganda's Karamoja region, 700km (420 miles) northeast of Capital Kampala, were over one million people face starvation due to prolonged drought, May 19, 2008. Karamoja is located in the remote and least developed semi arid part of Uganda. REUTER/James Akena (UGANDA) 

A Karamojong woman rests in the open during an operation dubbed 'cordon and search' by the Ugandan army in Looyakaromwae village, 25 km from Moroto, in eastern Uganda, March 29, 2007, to secure weapons and ammunitions in wrong hands. REUTERS/Euan Denholm (UGANDA) 

A Karamojong warrior holds weapon during an operation dubbed 'cordon and search' by the Ugandan army in Looyakaromwae village, 25 km from Moroto, in eastern Uganda, March 29, 2007, to secure weapons and ammunitions in wrong hands. REUTERS/Euan Denholm (UGANDA) 

A woman prepares lunch at the Kobulin Transit Centre, 70 km (43 miles) southwest of Moroto in Karamoja, eastern Uganda, March 27, 2007. Picture taken March 27, 2007. REUTERS/Euan Denholm (UGANDA) 

A young girl stands in a doorway at the Kobulin Transit Centre, 70 km (43 miles) south-west of Moroto in Karamoja, eastern Uganda, March 27, 2007. Picture taken March 27, 2007. REUTERS/Euan Denholm (UGANDA) 

A shepherd boy from the Karamoja tribe stands next to his bull at the Naitakwae cattle market near Moroto in eastern Uganda March 26, 2007. REUTERS/Euan Denholm (UGANDA) 

Betty Aneyumel from the Karamoja tribe rakes fermented millet to prepare a local alcoholic drink in Moroto, eastern Uganda, March 25, 2007. REUTERS/Euan Denholm (UGANDA) 

A Ugandan nomadic Karamojong warrior sits with an empty tin as the World Food Programme (WFP) launches an emergency food programme in Naweet village, Moroto district, 304 miles (506 km) northeast of the capital Kampala, January 16, 2007. The U.N. World Food Programme launched an emergency food programme on Tuesday for half a million people in Uganda's northeastern Karamoja region, hit by a devastating third drought in six years. Picture taken January 16, 2007. REUTERS/James Akena (UGANDA) 

A member of Uganda's nomadic Karamojong tribe displays a rodent she hunted for food in Naweet village, Moroto district, 304 miles (506 km) northeast of the capital Kampala, January 16, 2007. The U.N. World Food Programme launched an emergency food programme on Tuesday for half a million people in Uganda's northeastern Karamoja region, hit by a devastating third drought in six years. Picture taken January 16, 2007. REUTERS/James Akena (UGANDA)