Only 7 out of 600 hopefuls approved to run, including 5 ultra-conservatives; many likely to stay away from vote expected to focus on corruption, economy and not nuclear deal

Supreme leader responds to opposition's #NototheIslamicRepublic social media campaign, after just 7 mainly ultraconservative candidates approved to run in election

Ali Larijani is first high-profile candidate to potentially back policies of outgoing administration; Ebrahim Raisi is an ultraconservative who opposed Rouhani

Several conservative candidates are vying for presidency, including former defense minister and head of judiciary; run by moderate FM Zarif also said to be a possibility

Meanwhile successor to assassinated Quds force chief threatens 'severe revenge' -- which may come from within the United States

New restrictions come on 40th anniversary of attack on US embassy, and as Iran ups enrichment, targeting senior military officers, chief justice, and advisers to supreme leader