Since the end of the Cold War, new notions on international security have arisen that suggest that the concept has evolved to include the security of individuals. However, the more traditional concept of international security as pertaining primarily to the security of states remains applicable to many current security crises. This thesis substantiates this argument by examining the international reactions to Nigeria's Boko Haram security issue. This thesis finds that other states responded to

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... he Boko Haram threat only when it extended beyond Nigeria to neighbouring states including Chad, Cameroun and Niger. The Boko Haram security threat was recognized as a common security threat when it began to affect Cameroun in particular. Therefore, this thesis argues that states likely respond to an existing security threat when it begins to endanger individual national territories. They acknowledge an existing security issue as a common security threat only when it extends beyond a single state into at least one foreign territory. The concept of human security in international security is therefore lacking adequate utilization during security crises and its correct application must be a strong focus within international security literature and policy.