Ever heard about speeches/gestures meant for public consumption? You think he was mindless monster who did not care about his people? Was he not aware of the gravity? Had he had decided to fight till the last man last bullet even 100 N bombs could have not changed his mind. Japanese surrender was inevitable but US dropped the N bombs to snatch the victory from the Russians who were advancing towards Japan from the North West, a reality that is largely ignored by the Western propaganda filmmakers.