There is a considerable evidence showing that many states in the Global South are very weak, and therefore struggle to carry out basic responsibilities of statehood. While a handful of studies have examined problems associated with state weakness, there is a paucity of scholarly literature that thoroughly explores its empirical implications on regional security. It is on this note that this article draws on the contemporary developments in the Lake Chad region to elucidate the nodes that connect state weakness and regional security instability. It argues that any state that cannot efficaciously control its borders, promptly respond to security emergencies and demonstrate substantial institutional capacity in addressing citizensâ€™ needs is vulnerable to create regional insecurity, especially when the neighbouring states share similar attributes. The article concludes that an alternative approach to ensuring lasting regional security in such regions, especially in the present Lake Chad region, is deliberate commitment to statebuilding.