Could it be that Germany was the only nation willing to help Finland fight the Soviets?
From Wikipedia
> Interim peace
> ...
> Defensive arrangements were attempted with Sweden and the United Kingdom, but the political and military situation in the context of the Second World War rendered these efforts fruitless. Finland then turned to Nazi Germany for military aid.
From Wikipedia
> Interim peace > ... > Defensive arrangements were attempted with Sweden and the United Kingdom, but the political and military situation in the context of the Second World War rendered these efforts fruitless. Finland then turned to Nazi Germany for military aid.
https://en.wikipedia.org/wiki/Finland_in_World_War_II