Changes in foreign policy can have profound effects on a nation's national security. Shifts in political climate, alliances, or military strategy can alter the perceived threats and vulnerabilities a country faces. For instance, a move towards military intervention may enhance security in one area while provoking adversaries in another, potentially destabilizing the region. Additionally, diplomatic efforts may lead to improved relations, decreasing the likelihood of conflict. Consequently, effective foreign policy must balance defense strategies with international relations, ensuring a comprehensive approach to maintaining national security while adapting to an ever-changing global landscape.