Nigerian President Muhammadu Buhari has said Nigeria is facing “a state of emergency” as a result of ongoing insecurity. This emergency is commonly understood as the threat posed by Boko Haram in the country’s northeast. However, this understates the complexity and multidimensional nature of Nigeria’s security challenges, which impact all of the country’s regions. At the same time, armed violence is not omnipresent across Nigeria and is primarily concentrated in specific geographic corridors. Following is a review of Nigeria’s diverse security threats, the risks they pose, and the landscapes in which they have germinated.