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Iran Threatens to Close Strait ‘Completely’ After Ultimatum

Iran warns closure of Strait of Hormuz would follow US strikes on energy sites amid intensified regional conflict affecting global oil supply, with 20% passing through the strait.

  • On Sunday, Iran's Islamic Revolutionary Guard Corps announced it would 'completely close' the Strait of Hormuz if the United States targets Iranian energy infrastructure, responding to President Donald Trump's 48-hour ultimatum set late on Saturday.
  • Retaliating after earlier strikes, Iran said its attacks in the Negev Desert hit the Natanz nuclear enrichment site and a hospital in Andimeshk, causing evacuations and scores wounded in Arad and Dimona.
  • Roughly one-fifth of global oil supply passes through the strait, and tanker traffic has nearly halted, with casualty totals exceeding 2,000 and Iran's death toll surpassing 1,000.
  • The Pentagon declined to comment while US officials say Iran's Revolutionary Guard controls much of Iran's infrastructure used in the war, and Tehran claims it permits safe passage for non-enemy vessels despite practically closing the strait.
  • The International Atomic Energy Agency reported most of Iran's estimated 440kg of enriched uranium is beneath rubble at Isfahan, while Israel aims to weaken Iran's nuclear and missile programs.
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The country has virtually closed this maritime road, but a small number of ships have been able to pass through there, about 5% of the volume before the war

·São Paulo, Brazil
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The Columbian broke the news in Vancouver, United States on Sunday, March 22, 2026.
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