Iran's supreme leader launches special website with election tips With that in mind, the supreme leader reminds candidates that they must not blur the distinctions with the nation's enemies, whom he says wish to foment discord and civil war in Iran. "When the line is blurred it is very likely that some people cross this line or the enemy crosses it and comes to this side, or friends and insiders might forget and cross the line and go over to the enemy," he writes. Election rivalries must be kept within the confines of Iran's ruling system, or "nezam," he adds. A powerful clerical body, the guardian's council, will vet potential candidates before deciding who is allowed to stand. Mr Khamenei is believed to want predominantly conservative nominees. Mr Ahmadinejad, who has fallen out with the supreme leader, is constitutionally barred from seeking a third successive term. Ayatollah Khamenei's office has maintained his website for several years. Officials also maintain accounts for him on Twitter and Facebook - even though they are officially banned in Iran.