Prince of . . . . . . . .Wisconsin?

I saw this photo of Jake Gyllenhaal in Entertainment Weekly from his new movie Prince of Persia and was a little perplexed. Now, I don't like to get all PC about divesity in hiring and all that but I am a fan of historical accuracy. I'm no world traveller but I always thought Persia was essentially Iran. They couldn't get Jake into a mystic tan or something before shooting this thing? This is like casting Lou Diamond Phillips as Blackula. Odd.