Yes, the emperor said enough. Because they were nuked. The Emperor alone stopped it. Even after being nuked, the military was preparing for the invasion of Japan.
Now pay attention to this next line because its an important one.
There is no emperor in the terrorist organization. There is only the equivalent of the Japanese military.
you can bet we'd have needed a full scale invasion and millions of lost lives in the process on both sides.
This statement beggars the imagination. Did you get your understanding of history from a comic book?