Iran Suspends Islamabad Truce Framework as First US Combat Deaths Since March Confirmed in Jordan

Iran has suspended all of its commitments under the Islamabad Memorandum of Understanding (MoU), the 14-point deal that Pakistan mediated in June to reopen the Strait of Hormuz and lift the United States naval blockade, Deputy Foreign Minister Kazem Gharibabadi announced on July 18, accusing Washington of breaking the agreement first. The step removes the only negotiated framework for de-escalation between the two governments and formalizes the return to open conflict.

Hours earlier, US Central Command (CENTCOM) confirmed that two American service members were killed and one is missing after Iranian ballistic missiles struck the Muwaffaq Salti Air Base in Jordan on July 17. Four others were medically evacuated and later discharged. CENTCOM said it would withhold the identities of the dead until 24 hours after their families are notified. These are the first US military deaths since March, and they raise the domestic stakes of a war that had been fought largely through air strikes and proxy targets.

The diplomatic rupture follows Iran's Islamic Revolutionary Guard Corps (IRGC) declaring the Strait of Hormuz "highly unsafe and completely closed" on July 17, as US strikes on Iran entered a seventh straight night. The channel carries roughly a fifth of the world's seaborne oil, a formal escalation from the reduced traffic that has persisted since February, when the corridor was first disrupted. That declaration is contested. CENTCOM dismissed as false Iran's claim that two oil tankers had struck mines and exploded, and says its forces have facilitated the transit of about 800 commercial vessels since May. Roughly six ships still crossed in the prior 24 hours, so traffic is severely diminished rather than halted.

Markets registered the escalation without a single-day move above 5%. Brent crude settled about 4.6% higher near $88 a barrel and West Texas Intermediate (WTI) about 4.5% higher at roughly $82.49, according to CNBC, after an Iranian strike on Kuwait's Shuaiba power and water desalination plant during extreme summer heat. Crude has risen more than 14% over the week. The S&P 500 fell about 1%, to 7,457.69, though a separate global sell-off in semiconductor shares also weighed on equities that day.

The two governments describe the same nights differently. Iran said it struck American targets in Kuwait and Jordan and accused US forces of hitting civilian infrastructure, including an airport, a railway station and two bridges, according to The Hindu's live coverage. Al Jazeera reported that the US bombed bridges and energy infrastructure in Iran's south, cutting water to several villages, while Washington rejected Tehran's claim about the tanker explosions. Dawn reported the renewed attacks came one week after a fragile ceasefire fell apart. The economic effect reaches far from the fighting: Pakistan raised petrol prices by 5.44 rupees and diesel by 31.05 rupees per litre for a three-day window, explicitly citing higher import premiums and global prices tied to the conflict.