Foreign relations of Niger about 19,400 km² in northern Niger. There have been several decades of unresolved discussions regarding the delimitation of international boundaries in the vicinity of Lake Chad between Niger, Nigeria, Chad, and Cameroon. The lack of firm borders, as well as the receding of the lake in the 20th century led to border incidents between Cameroon and Chad in the past. An agreement has been completed and awaits ratification by Cameroon, Chad, Niger, and Nigeria. Niger has an ongoing conflict with Benin over Lété Island, an island in the River Niger approx. 16 kilometres long and 4 kilometres wide, located around
Niger River Fund. The World Bank approved a US$500 million soft loan in July 2007 to finance projects in the basin over a 12-year period. Funding will be awarded in two phases. The initial $185 million credit will go to Nigeria, Guinea, Benin, Mali and Niger. The second, $315 million investment, is slated for Burkina Faso, Cameroon, Chad and Ivory Coast. Besides financing the rehabilitation of dams in Nigeria, the loan will also fund the "sustainable management of selected degraded ecosystems and rehabilitation of small water infrastructure" and capacity building. In September 2009, the Nigerian government commenced a 36 billion naira dredging