There's 'almost no stopping' Iran from enriching uranium: Steve Witkoff U.S. Special Envoy to the Middle East Steve Witkoff details the nuclear negotiation talks with Iran on 'Hannity.' NEW You can now listen to Fox News articles! President Trump’s top Middle East envoy, Steve Witkoff, revealed that Iran had amassed enough highly enriched uranium for 11 nuclear bombs and could have upgraded some of it to weapons-grade within days — a realization he said underscored the urgency of Operation Epic