# Iran Declares Strait of Hormuz Closed and Strikes a US-Manned Base in Jordan as the Ceasefire Collapses

Brent crude settled near 78 dollars a barrel, its highest level since June 19 and up about 6 percent on the week, after Iran's Islamic Revolutionary Guard Corps ordered all traffic out of the strait and the United States struck roughly 80 Iranian military targets.

- Published: 2026-07-11T05:33:46.471Z
- Canonical: https://polylog.news/2026-07-11/trump-declares-us-iran-ceasefire-over-as-both-sides-trade-st
- Publisher: Polylog (Global desk)
- Section: geopolitics
- Sources: [South China Morning Post](https://www.scmp.com/news/world/united-states-canada/article/3360203/trump-says-missiles-locked-loaded-and-aimed-iran-amid-calls-his-killing?utm_source=rss_feed), [The Japan Times](https://www.japantimes.co.jp/news/2026/07/11/world/politics/trump-talks-continue-ceasefire-over-iran/), [Deutsche Welle](https://www.dw.com/en/us-wants-iran-to-pledge-to-halt-hormuz-attacks-officials/live-77913349), [The Hindu](https://www.thehindu.com/news/international/iran-us-war-donald-trump-washington-tehran-peace-talks-west-asia-conflict-strait-of-hormuz-live-updates-july-11-2026/article71209275.ece)

The interim truce between the United States and Iran has collapsed. Iran's Islamic Revolutionary Guard Corps (IRGC) [declared the Strait of Hormuz "closed until further notice"](https://www.aljazeera.com/news/2026/6/10/us-bombs-iran-after-trump-threat-tehran-closes-hormuz-strait-to-all-ships), warning that any vessel in the waterway, including oil tankers, would be fired on, and said it had struck a US command-and-control center and the Al-Azraq air base housing American forces in Jordan with ballistic missiles. Jordan's military said it [intercepted eight incoming missiles](https://www.aljazeera.com/amp/news/liveblog/2026/7/9/iran-war-live-one-killed-as-us-bombs-bushehr-chabahar-bandar-abbas-jask) on July 9.

The United States responded with force. US Central Command (CENTCOM) said its forces [struck about 80 Iranian military targets](https://www.centcom.mil/MEDIA/PUBLIC-RELEASES/Article/4538814/us-forces-complete-another-round-of-strikes-against-iran/), including more than 60 IRGC small boats along with air-defense systems, coastal radar and anti-ship missile sites, after Iran attacked three commercial ships near the strait. Washington also reimposed sanctions on Iranian oil exports. CENTCOM disputes that the channel is shut, maintaining that ["Iran does not control the Strait of Hormuz"](https://www.newsmax.com/newsfront/strait-of-hormuz-centcom-moving-traffic/2026/06/20/id/1260321/) and reporting days earlier that 55 merchant ships and roughly 17 million barrels of oil had transited in a single day.

The two sides describe the sequence differently, as they have throughout. President Donald Trump had already called the ceasefire "over," and after the funeral of Iran's supreme leader Ayatollah Ali Khamenei drew open calls for his killing, [he said missiles were "locked, loaded and aimed at Iran"](https://www.scmp.com/news/world/united-states-canada/article/3360203/trump-says-missiles-locked-loaded-and-aimed-iran-amid-calls-his-killing?utm_source=rss_feed) and threatened to "completely decimate" the country if any attempt were made on his life. Iranian officials [insisted they had "kept their word"](https://www.japantimes.co.jp/news/2026/07/11/world/politics/trump-talks-continue-ceasefire-over-iran/) on the truce and blamed repeated US and Israeli violations, while the earlier US demand that [Iran publicly vow to halt attacks on shipping](https://www.dw.com/en/us-wants-iran-to-pledge-to-halt-hormuz-attacks-officials/live-77913349) has been overtaken by the cross-border strikes.

Markets moved through energy. [Brent crude settled about 5.2 percent higher at 78.02 dollars a barrel](https://www.aljazeera.com/news/2026/7/8/oil-prices-surge-as-us-strikes-iran-reversing-fall-to-pre-war-levels), its highest close since June 19, and West Texas Intermediate rose about 4.4 percent to 73.52 dollars, as the strait carries roughly a fifth of the world's seaborne oil and gas and tanker traffic remained disrupted.

## What this means

The detente is a managed, reversible arrangement rather than a settled peace, and each shift between "over" and "talks continue" reprices the Hormuz risk premium directly into crude. Oil importers, airlines, and shippers lose through higher fuel and freight costs. Oil producers and energy-heavy indexes gain from the premium, and the persistent demand adds to headline inflation everywhere, complicating central banks already worried about persistently high prices.

## What to watch

- Whether ships actually stop moving through Hormuz. CENTCOM says traffic is still flowing while the IRGC has ordered vessels out, and a genuine halt would remove close to a fifth of seaborne oil supply and push prices well above the current risk premium.
- Whether either side hits oil-export infrastructure such as the Kharg Island terminal or Gulf loading facilities. Damage there would turn a shipping-risk premium into a real loss of physical supply that cannot be quickly replaced.
- How Gulf states, Jordan, Bahrain and Kuwait respond after strikes on bases on their territory. Whether they continue to permit US operations will signal whether the conflict widens across the region or stays contained to the US-Iran exchange.
- War-risk insurance premiums and tanker rerouting away from the strait. Sharply higher rates and diversions would confirm that shippers expect the disruption to persist rather than ease within days.