The concept of nationhood significantly affects international relations by defining how nations interact, recognize each other's sovereignty, and address transnational issues. A strong sense of nationhood can lead to increased diplomatic engagement, cooperation on global challenges, and a focus on collective security. Conversely, conflicting national identities can exacerbate tensions, nationalism, and even conflicts. Nationhood shapes alliances, trade relationships, and the discourse surrounding humanitarian issues, influencing the behavior of states within the international system. Understanding nationhood is crucial for analyzing global politics and the dynamics that drive international interactions.