Chad–Nigeria relations in the late 1970s, clashes occurred around Lake Chad, where both countries hoped to exploit oil reserves. Both also sought to defuse these confrontations, first by establishing joint patrols and a commission to demarcate the boundary across the lake more clearly. Then in the early 1980s, the low level of Lake Chad brought a series of tiny islands into view, leading to further disputes and disrupting long-standing informal trade networks. This relationship was also complicated by Nigeria's own instability in the north, generated by rising Islamic fundamentalism. Thousands of casualties occurred as the result of violent clashes in Nigeria throughout
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