Hmmm...I think that there may be a hidden or slight passing reference to the current Middle Eastern crisis in the film, the bold 300 (The US) standing up against the Arab hordes, fighting for freedom and liberty (In particular the Queens speech came across as a flag waver) and trying to stir up the rest of Sparta (The EU) to come to their aid, but having to fight against corruption to do so.
Either that, or I'm looking too deeply into it.
Still...bloody good film! The battle scenes against the Persians are nothing short of epic, and little is held back...sure, there may be some historical glitches...but it's pretty good viewing anyway.