Iran flatly rejects these assertions. Iranian military spokesperson Ebrahim Zolfaghari dismissed Trump's claims as "lies and fabrications," stating that the strait remains under Iran's "complete management and control" . Mohsen Rezaei, the newly appointed secretary of Iran's Supreme National Security Council, said Iran effectively controls the waterway and intends to impose its own toll system . The Persian Gulf Strait Authority, a body established by Iran, stated that the strait remains blocked and will not reopen until Iran's conditions are accepted .

On-the-ground reality: The evidence points to neither side holding uncontested control. Maritime intelligence firm Kpler reported that only 14 vessels crossed the Strait of Hormuz on August 12, 2026—a tiny fraction of the normal traffic of roughly 17-21 million barrels per day . The strait is effectively shut, with shipping at a near standstill .

U.S. Naval Blockade: A Timeline of Enforcement

The U.S. naval blockade has been a central and evolving mechanism of the standoff.

• Initial Blockade (April 13 – May 29, 2026): The United States imposed a naval blockade on Iran, applying to ships going to and from Iranian ports. On April 19, the U.S. forcibly seized an Iranian-flagged cargo ship attempting to breach the blockade .
• June 17 Islamabad MOU: President Trump and Iranian President Masoud Pezeshkian signed a 14-point "Islamabad Memorandum of Understanding," which declared the "removal of [the U.S.] naval blockade" and promised Iranian arrangements for the safe passage of commercial vessels .
• Blockade Reinstated (July 13, 2026): After the MOU frayed over competing interpretations of its Article 5, Trump announced he was "reinstating" the blockade, declaring the strait "open" and demanding a 20% tariff on all cargoes shipped through it . The U.S. military launched a seventh consecutive night of strikes on Iran that week to enforce the blockade .

Iran's Conditions for Reopening the Strait

On August 8, 2026, Iran's Supreme National Security Council, through its secretary Mohammad Bagher Zolghadr, issued a sweeping set of demands that the U.S. must meet before the strait can reopen . These conditions include:

• Lifting the U.S. naval blockade of Iranian ports
• Unfreezing Iranian assets held abroad
• Ending U.S. oil sanctions on Iran
• Withdrawal of all U.S. military forces from the region
• Paying Iran compensation for war damage
• A broader ceasefire to end the overall war

Iranian Foreign Minister Abbas Araghchi stated that a separate, Oman-brokered deal on new shipping lane coordinates would not, by itself, reopen the waterway . Iran has also denied that there are any ongoing direct negotiations with the U.S. .

Collapse of the June 2026 Provisional Agreement

The June 17, 2026, Islamabad MOU was designed to be a 14-point framework for peace. It covered an end to hostilities, the reopening of the Strait of Hormuz, U.S. sanctions relief, and a 60-day window for final talks . The agreement quickly unraveled in July over conflicting interpretations of Article 5, which concerned the control and tolls for the Strait of Hormuz . Each side accused the other of breaches. Tit-for-tat strikes resumed, and by July 13, Trump declared the MOU effectively dead and reimposed the blockade . Qatari and Omani mediators continue to attempt to revive a deal, but as of August 13, 2026, talks remain stalled .

The Broader War (Since February 28, 2026)

The standoff is a central front in a larger conflict. The U.S.-Israel air war against Iran began on February 28, 2026, and is now in its sixth month . The U.S. has conducted multiple waves of airstrikes targeting Iranian military capabilities, including at least seven consecutive nights of strikes in mid-July . Iran has responded with attacks on shipping in the Gulf and strikes on U.S. military bases in the region .

The Economic Toll

The closure of the Strait of Hormuz has had a severe impact on global energy markets.

• Brent crude prices surged approximately 75% since the war began .
• Global oil supply shortfall of roughly 4.3 million barrels per day .
• The strait normally carries about 20% of the world's oil. Traffic has collapsed to near zero on many days .
• Oil prices surged past $100 per barrel in April 2026 as tanker movement nearly halted .

Regional Spillover: Bab el-Mandeb and Houthi Attacks

The crisis has not been contained to the Strait of Hormuz. Yemen's Iran-backed Houthi movement has escalated attacks in the Bab el-Mandeb strait (the southern Red Sea chokepoint), targeting commercial vessels near the Gulf of Aden. This has created a parallel crisis, further raising shipping insurance costs and forcing rerouting around the Cape of Good Hope, compounding the global energy supply disruption .

Iran flatly rejects these assertions. Iranian military spokesperson Ebrahim Zolfaghari dismissed Trump's claims as "lies and fabrications," stating that the strait remains under Iran's "complete management and control" . Mohsen Rezaei, the newly appointed secretary of Iran's Supreme National Security Council, said Iran effectively controls the waterway and intends to impose its own toll system . The Persian Gulf Strait Authority, a body established by Iran, stated that the strait remains blocked and will not reopen until Iran's conditions are accepted .

On-the-ground reality: The evidence points to neither side holding uncontested control. Maritime intelligence firm Kpler reported that only 14 vessels crossed the Strait of Hormuz on August 12, 2026—a tiny fraction of the normal traffic of roughly 17-21 million barrels per day . The strait is effectively shut, with shipping at a near standstill .

U.S. Naval Blockade: A Timeline of Enforcement

The U.S. naval blockade has been a central and evolving mechanism of the standoff.

• Initial Blockade (April 13 – May 29, 2026): The United States imposed a naval blockade on Iran, applying to ships going to and from Iranian ports. On April 19, the U.S. forcibly seized an Iranian-flagged cargo ship attempting to breach the blockade .
• June 17 Islamabad MOU: President Trump and Iranian President Masoud Pezeshkian signed a 14-point "Islamabad Memorandum of Understanding," which declared the "removal of [the U.S.] naval blockade" and promised Iranian arrangements for the safe passage of commercial vessels .
• Blockade Reinstated (July 13, 2026): After the MOU frayed over competing interpretations of its Article 5, Trump announced he was "reinstating" the blockade, declaring the strait "open" and demanding a 20% tariff on all cargoes shipped through it . The U.S. military launched a seventh consecutive night of strikes on Iran that week to enforce the blockade .

Iran's Conditions for Reopening the Strait

On August 8, 2026, Iran's Supreme National Security Council, through its secretary Mohammad Bagher Zolghadr, issued a sweeping set of demands that the U.S. must meet before the strait can reopen . These conditions include:

• Lifting the U.S. naval blockade of Iranian ports
• Unfreezing Iranian assets held abroad
• Ending U.S. oil sanctions on Iran
• Withdrawal of all U.S. military forces from the region
• Paying Iran compensation for war damage
• A broader ceasefire to end the overall war

Iranian Foreign Minister Abbas Araghchi stated that a separate, Oman-brokered deal on new shipping lane coordinates would not, by itself, reopen the waterway . Iran has also denied that there are any ongoing direct negotiations with the U.S. .

Collapse of the June 2026 Provisional Agreement

The June 17, 2026, Islamabad MOU was designed to be a 14-point framework for peace. It covered an end to hostilities, the reopening of the Strait of Hormuz, U.S. sanctions relief, and a 60-day window for final talks . The agreement quickly unraveled in July over conflicting interpretations of Article 5, which concerned the control and tolls for the Strait of Hormuz . Each side accused the other of breaches. Tit-for-tat strikes resumed, and by July 13, Trump declared the MOU effectively dead and reimposed the blockade . Qatari and Omani mediators continue to attempt to revive a deal, but as of August 13, 2026, talks remain stalled .

The Broader War (Since February 28, 2026)

The standoff is a central front in a larger conflict. The U.S.-Israel air war against Iran began on February 28, 2026, and is now in its sixth month . The U.S. has conducted multiple waves of airstrikes targeting Iranian military capabilities, including at least seven consecutive nights of strikes in mid-July . Iran has responded with attacks on shipping in the Gulf and strikes on U.S. military bases in the region .

The Economic Toll

The closure of the Strait of Hormuz has had a severe impact on global energy markets.

• Brent crude prices surged approximately 75% since the war began .
• Global oil supply shortfall of roughly 4.3 million barrels per day .
• The strait normally carries about 20% of the world's oil. Traffic has collapsed to near zero on many days .
• Oil prices surged past $100 per barrel in April 2026 as tanker movement nearly halted .

Regional Spillover: Bab el-Mandeb and Houthi Attacks

The crisis has not been contained to the Strait of Hormuz. Yemen's Iran-backed Houthi movement has escalated attacks in the Bab el-Mandeb strait (the southern Red Sea chokepoint), targeting commercial vessels near the Gulf of Aden. This has created a parallel crisis, further raising shipping insurance costs and forcing rerouting around the Cape of Good Hope, compounding the global energy supply disruption .