Final answer:
The belief that winning a nuclear war is possible is false based on historical evidence of war's unwinnability.
Step-by-step explanation:
The question refers to the belief that winning a nuclear war is possible. In the context provided, it is clear that the history of warfare, whether it be in World War I or the Vietnam War, shows that achieving victory in such conflicts is often deemed impossible. Many military strategists and commanders have recognized the futility of trying to win wars through sheer force alone, as evidenced by the adoption of strategies involving attrition and the acknowledgment of the unwinnability of certain conflicts. Therefore, the answer to the question is False.