Far North Region, Cameroon Logone rises west of the territory and flows north to form most of the border between the Far North and Chad. It eventually meets the Chari, which also rises in Chad. The Chari forms the remainder of the Chad-Cameroon border beginning at Kousséri before emptying into Lake Chad. These rivers all follow a tropical regime, fluctuating between high water in the wet season (May to September) and low water in the dry season (October to April). At the height of the dry season, many of the waterways disappear completely or else diminish to a mere trickle. The Logone all but
Chad yet occur in Chad. In 2006 and in 2008 rebel forces attempted to take the capital by force, but on both occasions failed. An agreement for the restoration of harmony between Chad and Sudan, signed 15 January 2010, marked the end of a five-year war. The fix in relations led to the Chadian rebels from Sudan returning home, the opening of the border between the two countries after seven years of closure, and the deployment of a joint force to secure the border. In May 2013, security forces in Chad foiled a coup against President Idriss Deby that had been