Just curious: Could some of the rearmament they allowed in the 1930s have been the result of worrying a little about the Soviets, and thus thinking, "Well, we'll have Germany as a buffer, and maybe it'll be better for us if Germany is able to defend itself"? Or, weren't they that concerned about the "red menace" at that point? Obviously, the Allies tried to support the Whites a little during the Russian Civil War, though given how exhausted they were from the fighting they couldn't do a lot.
If it was, could it be argued that the splitting up of Germany into the origina confederation kingdoms is totally implausible because - along with the lack of enforceability - they wanted a large state in Germany to provide a buffer against the Soviets? Or, weren't they worried about Trotsky's Red Army in 1919? (I can imagine they might not be, since Trotsky hadn't even won the RCW at that piont.)