Hitler might impulsively declare war on the United States in expectation that Japan would soon follow, without waiting to confirm Tokyo's decision. If Tojo then fell, America could enter the European war while Japan stepped back, a major strategic gift to Roosevelt. Churchill is less likely to declare war alone, but he might order reconnaissance, issue a warning, or make a naval show of force. Pressure from Australia and the wider empire would strengthen demands to reinforce Singapore or move Mediterranean Fleet units toward the Indian Ocean. Those reactions could widen a Pacific reconnaissance crisis into a global realignment and disrupt British plans in other theatres.
Chapter · 1:58:52-2:09:34
Hitler and Churchill could widen the crisis
German opportunism or British reinforcement could turn the Pacific sighting into a much wider strategic realignment.