I would suggest to all parties involved in Iranian nuclear negotiations to take a look at this picture, two basiji militia holding a sign which translates to " not only we are going to make you all convert to Islam but also we will replacing Whitehorse with mosque". I would argue that this message is not propaganda only, but truly holds the belief of largely dominant part of Iranian government. Would it be safe to say it is simple minded to think they have changed their minds overnight and will not be pursuing such if they could? Is coexisting with them even possible? ---my answer is no , you make up your mind.