International relations significantly shape national security strategies by determining how states perceive threats and opportunities in the global arena. Relations with other nations influence defense policies, military alliances, and diplomatic stances. Security strategies often prioritize responses to external threats, such as terrorism, cyberattacks, or geopolitical conflicts. They also guide resource allocation, focusing on intelligence, military readiness, and international cooperation. Moreover, international agreements and treaties can affect trade and economic security, illustrating the interconnectedness of national policy with global dynamics and the necessity for strategic foresight and diplomacy.