Both Spain and Turkey were far too canny to be drawn into the war. The famous meeeting between Hitler and Franco at Hendaye is one of the few examples of Hitlers aura failing to impress. Franco failed to be mesmerized like Mussolini and presented a shopping list of resources "that would have killed an Ox" as the Spanish Foreign Minister described it. Hitler said that he'd rather have 2 wisdom teeth pulled than go through a meeting with Franco again and so that was that. Franco was not going to gamble his war-torn country on Hitler's promises: rather by keeping neutral Spain could trade and rebuild herself. There is a reason Franco and Salazar survived longer than any of their contemporaries...

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"Capital! We're nearly out of ammunition! Now we can get at them with the bayonet!" General Paddy Gough, 1st Sikh War