From: US Midwest
It seems that they do not always declare war on you, as in my game vs Fafnir they never did, and are still neutral in mid-1942. Then again, the Afrika Corps never showed up either, and I thought it had been fixed so that that couldn't happen. It seems that he has found ways to short-circuit these events, regardless of the efforts of the game designers.
So don't count on these things happening, they do not always occur, even if they are supposed to.
Lock up your wife and children now,
It's time to wield the blade..