Trump announced what he called a "crushing economic operation" against Iran on August 19: "Economic Warfare and Isolation on an unprecedented scale," targeting oil smuggling, swap lines, exchange houses, ship registries, and front companies. Any nation letting its "financial institutions, businesses, airports, or government entities" assist Iran faces "TREMENDOUS Economic Consequences." He also ordered US envoys to halt all conversations with Tehran. Foreign Minister Araghchi dismissed the "so-called 'Economic D-Day'" as diversion.

The sanctions remain rhetoric until OFAC publishes names; nothing has executed since August 7. The verified event is the halt order on the diplomatic track, which removes the off-ramp three days after the Islamabad MoU expired. The UAE embargo announced August 19 concentrates what remains of Iran's financial channels into fewer, more visible routes, mostly Chinese, so any designations that do execute will bite harder per action.

Separately, UKMTO advisories confirm a grim backfill: a chief engineer was killed when an unknown projectile struck the bulker Minoan Dignity off the Omani coast overnight August 17-18, the second vessel under the same management hit in two weeks.

Watch: executed designations within the week, the first named third-country bank, flag-state deregistration notices, and Tehran's answer. Brent traded near $94 Thursday, a fifth straight gain.