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 immunity and detained for nine months. In November 2000, the World Bank announced that $4 million of a $25 million signing bonus from the oil companies was spent by the Chadian government on weapons. The World Bank required tight restrictions on oil revenues as a condition of its loans. In January 2006, Chad moved to unilaterally increase the portion of oil revenues going to its general fund from 15 to 30 percent. On 28 August 2006, President Déby ordered Chevron and Petronas to quit the country. In Chad and especially Cameroon, through which the pipeline stretches 890 km of the