An Mi-26 heavy lift cargo helicopter lands at the team site of the UN Mission in Sudan (UNMIS) in Abyei, central Sudan, as Zambian soldiers serving with the international peacekeeping operation prepare to depart in armoured personal carriers on a patrol around Abyei town. The area has been the scene of heavy clashes since the seizure of the town – which sits on the border between Sudan and newly independent South Sudan – by Sudanese Government troops on 20 May. Photo ID 473894. 26/05/2011. Abyei, Sudan. UN Photo/Stuart Price