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 human trafficking. Oil exploitation is estimated at a potential 1.5 billion barrels, and Chinese companies are currently developing an oil refinery and another pipeline in the country. The Tchad Oil Transportation Company (TOTCO) manages the pipeline within Chad that is owned by the country. TOTCO is incorporated in Tchad, and is a joint venture between Chad and the Upstream Consortium. The Republic of Cameroon has been ruled by President Paul Biya since November 6, 1982. A relatively peaceful and stable nation, Cameroon is a republic with a multiparty presidential regime. Although there are presidential elections every seven years, there are