The U.S.-Iran ceasefire, signed just ten days ago, is fracturing under a cycle of retaliatory strikes, with both sides exchanging military blows over the Strait of Hormuz and President Donald Trump threatening on Truth Social to "militarily complete the job" if negotiations collapse. Saturday saw at least two waves of U.S. strikes on Iranian targets within 24 hours, triggered by attacks on commercial shipping — including an IRGC drone strike on the Panama-flagged tanker M/T Kiku, which was transiting the strait carrying more than two million barrels of crude oil.
The MOU Ambiguity Driving the Breakdown
The memorandum of understanding brokered to end the conflict contains a fault line that is now cracking open. Under its terms, Iran committed to making its "best efforts" to allow safe passage of commercial vessels through the Strait of Hormuz; in return, the U.S. lifted its blockade on Iranian ports. The two sides have since diverged sharply on what that language demands. Iran has reasserted that ships must coordinate passage through the strait — a position U.S. Central Command has responded to with airstrikes. The gap between "best efforts" and active coordination requirements is not a minor drafting oversight; it is the operational flashpoint the current escalation is running through.
Hotline Agreed, Not Yet Live
During Switzerland negotiations last week, led on the U.S. side by Vice President JD Vance, delegations agreed to establish a direct communication channel between the U.S. military and the Islamic Revolutionary Guard Corps to manage Hormuz traffic. As of Saturday, that hotline had not been made operational — a failure that removed the one mechanism designed to prevent exactly the kind of incident that struck the M/T Kiku.
Strikes Widen; Tuesday Talks Uncertain
Iran's IRGC responded to U.S. strikes by launching drone and missile attacks on American bases in Kuwait and Bahrain. Iranian state media quoted IRGC leadership threatening more forceful action against shipping in the strait. CENTCOM confirmed its aircraft struck Iranian military surveillance infrastructure, communication systems, air defense sites, drone storage facilities, and minelaying capabilities — a target set aimed at degrading Iran's ability to interdict maritime traffic. Whether the next round of technical negotiations, planned for Tuesday in Switzerland, will proceed at all is now openly in question.
Trump's Rhetoric Narrows the Diplomatic Window
Trump confirmed the strikes Saturday evening, writing that there "may come a point" when the U.S. is "no longer able to be reasonable" and would be "forced to militarily complete the job that we very successfully started." He added that under such a scenario, "the Islamic Republic of Iran will no longer exist." That language, issued while talks are nominally still on the calendar, signals that the diplomatic runway is compressing fast. With the hotline dark, the MOU contested, and strikes running in both directions, the ceasefire is less a pause in hostilities than a label increasingly disconnected from events on the ground.