"World War III" refers to a hypothetical global conflict that could involve multiple nations and alliances, similar to the previous world wars. While there have been various tensions and conflicts since World War II, no large-scale war has officially been labeled as World War III. Discussions about World War III often include concerns over nuclear weapons, cyber warfare, and geopolitical rivalries among major powers like the United States, Russia, and China. The potential for such a conflict raises questions about international diplomacy and the importance of maintaining peace to prevent catastrophic consequences.