How would events change if Britain and Japan remained allies into the Second World War?
Short answerBritain would be less aligned with the United States, changing the diplomatic foundation on which the Pacific war developed.
NotesIf the Anglo-Japanese Alliance survived, British-American relations must have developed very differently. Britain would not preserve the Japanese treaty while simultaneously expecting the same American aid that historically replaced it. Japan would consequently occupy a different place in British planning before the war began. The major naval powers would enter the conflict in a fundamentally different alignment.