The signs are there, the occurrence fixed only the actual dates are unknown. Given a shock like the American usage of nuclear bombs in World War II, the war may be short, as was the Six Day War in 1967. Or it can be long, much longer than the Day of Atonement War in 1973, if it becomes an all-out war for elimination and survival. In either case, it will start with a surprise attack, like Pearl Harbor or Germany’s invasion of Poland.