Nigeria has been facing multiple crises since independence. Such problems include citizenship, bad governance, ethnicity, economic and political instability. These negative factors have been lingering on in Nigeria and getting worse yearly. Issues of militancy, Boko Haram, Banditry and kidnapping are some of the effects of the above problems. The book is an attempt to extrapolate the nexus between Terrorism and Human Security in Nigeria given the present social and political challenges in the country. The study adopts the collapse state, failed state and fragile theories as the model of our analysis. A critical assessment of Terrorism revealed that many years of governance in Nigeria, the hopes and aspiration of the citizenry could still not be met. The inability of our leadership to provide good democratic governance therefore was responsible for the insecurity in the country and this in effect gave rise to robberies, kidnappings, bunkering of oil pipelines as well as the emergence of militancy across the country. The book therefore submits that until, good democratic governance is put in place with security agencies well-funded and trained with modern gazette system, internal security cannot be guaranteed.