Iran's oil exports are collapsing under the reinstated U.S. blockade, per WSJ-cited Kpler data: loadings down more than four-fifths, no newly loaded tanker through since mid-July, and the crude already at sea could be exhausted by mid-October. Gulf rivals still ship two-thirds of prewar volumes. Bessent vows the one-two punch will collapse the regime; Dennis Ross cautions that Iran has consistently surprised on resiliency.