Occupation of Iran in World War 2

That the Germans had been unable to provide effective help went largely unnoticed in Britain, while the role that German agents had played in fomenting it was blown out of all proportion.  The British eyes, concerned with the uncomfortable amount of success Rommel was having in North Africa, focused on the large number of German workers in Iran.  The British, probably correctly, suspected several of them of being spies.  The Iranian posture near Iraq, that on being ‘on guard’, probably intensified British suspicions.