Iran-made, Dezful medium range ballistic missile (Bottom) and Zolfaghar road-mobile single-stage solid-propelled liquid fueled missile are seen next to an Iran flag in the Azadi (Freedom) square during a rally to commemorate the 42nd Victory annivers TEHRAN, Iran (AP) - Iran began enriching uranium Friday to its highest level ever, edging closer to weapons-grade levels to pressure talks in Vienna aimed at restoring its nuclear deal with world powers after an attack on its main atomic site.A top official said only a few grams an hour of uranium gas would be enriched up to 60% purity — triple the level it once did but at a rate far slower than what Tehran could produce.