**US naval enforcement of the blockade on Iranian ports and the Strait of Hormuz remains active into October 2026**, following its reinstatement in July after the June memorandum of understanding between the Trump administration and Tehran collapsed amid mutual accusations of violations. The blockade, originally imposed in April during escalated hostilities, was briefly lifted in mid-June to allow shipping resumption and launch 60-day talks on sanctions relief, nuclear issues, and maritime security, but US Central Command has since redirected over 130 vessels and disabled non-compliant ships while monitoring compliance. Iranian efforts to impose tolls or alternative routing, combined with periodic shipping incidents, have sustained US pressure aimed at reopening the waterway without concessions. Diplomatic channels involving regional facilitators continue, yet recent enforcement actions and administration statements indicate the blockade serves as leverage pending verifiable Iranian steps on oil exports, transit guarantees, and broader agreements.