Geography of Chad lake has shrunk dramatically in the last four decades due to increased water usage from an expanding population and low rainfall. Bordered by Chad, Niger, Nigeria, and Cameroon, Lake Chad currently covers only 1350 square kilometers, down from 25,000 square kilometers in 1963. The Chari and Logone Rivers, both of which originate in the Central African Republic and flow northward, provide most of the surface water entering Lake Chad. Chad is also next to Niger. Located in north-central Africa, Chad stretches for about 1,800 kilometers from its northernmost point to its southern boundary. Except in the far northwest and south,
Boko Haram towards them a higher level of international attention. The U.S. Bureau of Counterterrorism provides the following summary of Boko Haram's 2013 foreign operations: Boko Haram has often managed to evade the Nigerian army by retreating into the hills around the border with Cameroon, whose army is apparently unwilling to confront them. Nigeria, Chad and Niger had formed a Multinational Joint Task Force in 1998. In February 2012, Cameroon signed an agreement with Nigeria to establish a Joint Trans-Border Security Committee, which was inaugurated in November 2013, when Cameroon announced plans to conduct "coordinated but separate" border patrols in 2014. It