In most versions of the game it is essential for the Allies to capture Norway to allow the US and UK to properly reinforce Russia. A question them arises, which Ally should do the capturing (i.e. which mouse should "bell" the cat)?
Among many second edition players, Russia can't attack the first turn. Assuming that the German player moves out his fighter on his turn (as he should), the UK could launch an amphibious assault on Norway using the tank on the transport from Canada, supported by a bomber and two fighters (assuming that the ships in the UK sea zone were sunk by German air and sea attack).
But the odds aren't great. The attack succeeds 73% of the time (79% if you assume mutually assured destruction that allows Russia to occupy Norway on its turn). http://www.dskelly.com/misc/aa/aasim.html. The average UK IPC loss is 21 (the tank, one fighter, and a second fighter half the time) versus much less for the Germans. In conjunction with the naval losses, might that leave Britain too weak to defend itself properly?
Let's try Russia. If it doesn't get to attack the first turn, it might take out Norway the second turn. But that might weaken Karelia too much?
I can't imagine America doing this job. On turn two with two fighters (based in the UK) and two infantry in an amphibious assault?
Maybe a clue comes from another example (using a Russian first turn attack). Russia "strafes" Norway without taking it. In Axis and Allies, Should An Attacker Be Allowed to Relinquish His "Prerogatives?" UK (or US) makes an amphibious attack against a WEAKENED German force. Could a "cooperative" venture be the best solution of all?