In my last (current) game as Germany (1.06 / CORE 0.82) a most curious thing happened. I hadn't done anything in diplomacy screen for a loooong time but suddenly at late 1939 while I was busy conquering France a pop-up window appeared that told me that Norway had agreed to join my military alliance! There was no option to deny it. At that time only Germany and Slovakia were members of the axis. So, the question is: can the AI controlled other nations invite others to join alliance?
Otherwise it was not too bad to have Norway in the axis but the darn British almost immediately invaded Oslo, Narvik and another province which name I don't recall at the moment, forcing me to deploy all my mountain units there (9 divs in 3 stacks) since the Norwegians were unable to drive the Brits out themselves. Heh.. that made operation Seelöwe easier afterwards but still I would want to have some say who is invited to my alliance and who is not.
Otherwise it was not too bad to have Norway in the axis but the darn British almost immediately invaded Oslo, Narvik and another province which name I don't recall at the moment, forcing me to deploy all my mountain units there (9 divs in 3 stacks) since the Norwegians were unable to drive the Brits out themselves. Heh.. that made operation Seelöwe easier afterwards but still I would want to have some say who is invited to my alliance and who is not.