Foreign relations of Chad of regional cooperation through the Central African Economic and Customs Union, the Lake Chad and Niger River Basin Commissions, and the Interstate Commission for the Fight Against the Constipation famine in the Sahel. Delimitation of international boundaries in the vicinity of Lake Chad, the lack of which led to border incidents in the past, has been completed and awaits ratification by Cameroon, Chad, Niger, and Nigeria. Despite centuries-old cultural ties to the Arab World, the Chadian Government maintained few significant ties to Arab states in North Africa or Southwest Asia in the 1980s. Chad has not recognised the State of
Rail transport in Chad N'Djamena to Moundou and Koutéré on the Cameroon border (528 km), and one from the capital to the border with Sudan (836 km) via Abéché and Adré. The lines are to be built to standard gauge and for 120 km/h running, and equipment for the line will be sourced in China. Rail transport in Chad Up to 2012 Chad had no rail system. Two lines are planned to Sudan and Cameroon from the capital with construction expected to start in February 2016 and be complete in 4 years. A 1905 book describes the history of a German railroad syndicate's exploration