Niger's junta has ordered three Chinese officials working in the oil sector to leave the country, two sources familiar with the decision told Reuters on Friday, in the latest move by regional military governments to assert greater control over resources. The request for the departure of the Niger-based directors of the China National Petroleum Corporation (CNPC), the West African Oil Pipeline Company (WAPCo) and the joint venture oil refinery SORAZ was communicated Wednesday, the sources said.