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 transnational grassroots environmental network. The organization brings together and mobilizes social and environmental advocacy groups from all over the world to rally behind certain issues. While FOE has been involved in documentation and monitoring of pipeline project since its construction, the organization more recently developed a report in 2008 condemning a World Bank initiative for "New Climate Funds". Along with four other advocacy organizations, FOE stated that the World Bank had repeatedly engaged in projects, such as the Chad-Cameroon pipeline, that actually negatively affected the environment and only added to pollution. The Center for Environment and Development is a Cameroon-based