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US and Iran Trade Tanker Strikes as the IRGC Widens Its Maritime Zone

The biggest wave of attacks on Gulf shipping since the war began came with an expanded blockade area and disputed claims about what was hit.

Assembled by Claude from 10 sources at 9 outlets · Wednesday, September 9, 2026, Evening edition, 5:14 PM EDT · no human byline

Disclosure. This item was assembled by an AI from the RSS excerpts of the outlets tagged inline. No human wrote or checked it before publication. Feed selection and categories are editorial choices by Teresa Lo. Nothing here is investment advice.

What happened

Iran and the United States struck tankers in what Reuters called the biggest wave of attacks on shipping since the war began. reuters.com US Central Command, which is responsible for American forces in the Middle East, confirmed the destruction of five tankers linked to Iran in the Persian Gulf. english.elpais.com NewsNation reported the same five tankers destroyed as attacks widened across the Gulf. newsnationnow.com

Iran said it targeted ten ships near the Strait of Hormuz, including two US vessels and eight oil tankers, after the American strikes. thehill.com The Islamic Revolutionary Guard Corps said the action was retaliation for the destruction of Iranian commercial and oil vessels, and Tehran also targeted a US base in Jordan. time.com Central Command denied an IRGC assertion that Iranian forces had struck two US Navy destroyers, saying the claim was "completely FALSE" and that all attempted Iranian attacks failed. iranintl.comfreepresskashmir.news The two accounts of the same engagement have not been reconciled. iranintl.comthehill.com

Why it matters to investors

Iran has largely choked off transit through the strait, which carried a fifth of global oil before the war. newsnationnow.com Reuters reported that one third of Gulf oil is still missing from the data despite so-called dark crossings by vessels avoiding tracking. reuters.com US Energy Secretary Chris Wright, clarifying a figure of 17 million to 18 million barrels, told Fox News the number was 18 million barrels per day. reuters.com

That missing third is the number to hold on to, because it separates the barrels that are merely untracked from the barrels that are not moving at all. reuters.comnewsnationnow.com The IRGC said its maritime restricted zone would extend beyond Hormuz into the Gulf of Oman and the Arabian Sea. timesofisrael.com That announcement followed comments by Mohsen Rezaei, secretary of Iran's Supreme National Security Council, quoted by Iranian state media. timesofisrael.com

What to watch

IRGC spokesperson Hossein Mohebbi set six conditions for a ceasefire alongside the expanded blockade, including the complete withdrawal named among four additional demands. iranwire.com Those terms are the clearest published statement so far of what Tehran says would end the maritime campaign, and they arrived on the same day as the strikes rather than in place of them. iranwire.comreuters.com

The gap between Iranian claims and Central Command's denials is itself a market variable, because shipping and insurance decisions turn on which account of a given strike is accurate. iranintl.comfreepresskashmir.newsthehill.com For now the measurable quantity is tonnage: how much crude actually clears the strait, against the fifth of global supply it once carried. newsnationnow.comreuters.com The extension of the restricted zone into the Gulf of Oman and the Arabian Sea widens the area where that question applies. timesofisrael.com

Sources

  1. reuters.com: Iran and US hit tankers in biggest wave of attacks on shipping since war began | Reuters (2026-09-09)
  2. newsnationnow.com: US destroys 5 more Iranian tankers as attacks widen across the Gulf - NewsNation (2026-09-09)
  3. english.elpais.com: United States says it destroyed five Iranian tankers | International - EL PAÍS English (2026-09-09)
  4. thehill.com: Iran attacks vessels, US base in Jordan after tankers sunk - The Hill (2026-09-09)
  5. time.com: Tehran Targets U.S. Base in Jordan In Retaliation for U.S. Destroying Iranian Oil Tankers (2026-09-09)
  6. iranwire.com: IRGC Sets Six Conditions for Ceasefire and Expands Maritime Blockade - IranWire (2026-09-09)
  7. timesofisrael.com: Iran's IRGC says maritime restricted zone to extend into Gulf of Oman, Arabian Sea (2026-09-09)
  8. iranintl.com: All IRGC attempted attacks failed, CENTCOM says - Iran International (2026-09-09)
  9. freepresskashmir.news: US Central Command denies Iran's claim that two Navy destroyers were struck (2026-09-09)
  10. reuters.com: One third of Gulf oil is still missing despite 'dark crossings', data shows | Reuters (2026-09-09)