Niger–Nigeria relations little interest in a pan-Hausa state. The division of Lake Chad, although forced to go to mediation between Chad, Cameroon, Niger, and Nigeria, awaits formal settlement and has not been a source of tension between Niamey and Abuja. Nigeria has an embassy in Niamey, while Niger maintains an embassy in Abuja. The cities of southern Niger and Northern Nigeria have been linked in the Trans-Saharan trade going back to the medieval period. Cities such as Kano and Katsina have long been the southern terminus of trade networks which sustain much of Niger's economy. Nigeria benefits from the trade and agricultural
Chad–Cameroon Petroleum Development and Pipeline Project which provided $46.6 million to finance Cameroon and Chad's equity in COTCO and TOTCO. Included in plans for the project was a revenue management law developed by the World Bank. This separated the oil revenues given to Chad into four required areas: a Future Generations Fund, health, education and other development projects, a fund to compensate the Doba region of Chad from where the oil was extracted and government reserves. The revenue management law also created the Petroleum Revenue Oversight Committee, which oversees how the oil revenues are spent, and includes members of both the Chadian government and civil society.