Abstract With reliance on qualitative secondary research, emphasizing content or textual analysis, this article introduced national security strategy as a toolkit for assessing state preparedness to combat global security threats that endanger national security in the 21st century. Through the lenses of the social contract theory, realist theory, and alliance theory, this paper viewed state preparedness as a legal and moral obligation of the state. It argues that the national security strategy is the viable and available starting point to assess states' preparedness to counter global security threats posing a danger to national security in the 21st century. Conclusively, the paper opined that the national security strategy merely demonstrates the expressed commitment of states’ preparedness. The implementation of the strategy will prove or disprove the preparedness of the state's expressed commitment. Keywords: Global Security threats, National Security Strategy, National Security Policy, National Security, State Preparedness