JWoods, hillary_ step's discussion with you was based on knowledge of the area and not based just on watching the media. It is also worth reminding you again that much of what goes in Afghanistan is neither instigated nor supported by Iran; The USA relied very much on Iranian help for the invasion of Afghanistan because the Iranian form Islam is very very different from that of the Taliban, (see my post to Freydo) and they loathe Taliban as much as the US does.
As for BTS and his statement about some Arab nations, and welcoming an Israeli attack on Iran, the same applies, with the added twist that they are very different ethnically too.
I suspect General Moghamadam was playing to his own audience, and that his bellicosity and hyperbole was to shore up his own position; he knows that the USA, with positioning of just one its Aircraft Carriers would have total air superiority..
The regime in Iran more is isolated than ever, and the sanctions are damaging it.
I saw Cameron's stance on Turkey too and was surprised by him; it is a very enlightened view, and if followed through could greatly alter the dynamics in the region.
David