International relationships influence national policy by shaping diplomatic ties, trade agreements, and security alliances. Countries must navigate complex global dynamics, which can lead to collaborative initiatives or conflicts over issues like human rights or economic interests. Policy decisions often reflect a country's strategic objectives within the international community, including adherence to international treaties or reactions to global events. Moreover, public perception of international relations can drive domestic political agendas, as citizens may advocate for or against policies based on their alignment with national interests and global responsibilities.