OK, for those of you who question the idea that Iran is becoming a dangerous regional hegemon, let's run some numbers.Surely you won't doubt that numbers from the prestigious international Institute of Strategic Studies are worthy of attention.
Eek! Iran, with a population of 78 million, is rapidly overtaking Saudi Arabia (population 30 million): it's almost a sixth the size of the Saudi defense outlay! And the other regional hegemon, Yemen, has surpassed Bahrain!
To be fair, I know the Gulf is a dangerous neighborhood and lower population may mean greater vulnerability. But this graph does suggest the "Iran as new regional hegemon" meme might need some perspective.