Political ideologies significantly influence foreign relations by shaping how countries engage with others on global issues. For instance, a nation with a liberal ideology may prioritize diplomacy and international cooperation, while a nation with a more nationalistic or conservative ideology may adopt a more isolationist or aggressive stance. These ideological orientations affect decisions on trade agreements, military alliances, and responses to foreign conflicts. Overall, the dominant ideology of a country directs its approach to navigating the complexities of international relations.