The Soviets and Finland had a complex history including a non-aggression pact and a false flag operation used to break it. But the President of Finland after WWII, Paasikivi, signed a new one anyway. Norway, on the other hand, was reluctant to sign one. They went with the US instead, partly because they wanted some of that sweet, sweet Marshall Plan money.
There something secret here that only members can see. Probably an audio player or something.