Abstract
Geography has become a major determinant of geopolitics. The nature of a country’s geography has direct influence on the foreign policy posture of the said country. A state naturally does not live in isolation hence it cannot be separated from the direct and indirect influence of neighbouring countries. This study is focused on the Lake Chad environment and the insecurity therein. This study focused on the push and pull effect of resources, insecurity and diplomacy in the Lake Chad environment. It found that agriculture was badly affected following the recession of the Lake Chad. Again, the mass migration of the people to the Lake Chad and their inability to eke-out a living there as well as national insecurity due to Chadian Civil War, Cameroonian Civil War and Islamism insurgency caused widespread irregular migrations into neighbouring countries. The study recommends increased multi-lateral engagements aimed at managing and transforming the deteriorating Lake Chad environment that has become overtaken by insecurity and resource depletion.