In the tense world of international relations, where the balance of power hangs on a knife-edge, a single moment can irrevocably alter the course of history. Imagine this: you are the newly elected leader, and within minutes of taking office, you're faced with a decision that could potentially end life as we know it. The clock is ticking, and you're the sole authorizer of a nuclear retaliation. This isn't a scenario from a科幻小说; it's a chilling reality that has, on several occasions, brought the world to the brink of destruction.