US-Iran ceasefire frays as Israel targets Lebanon, threatening fragile two-week truce

The clock was running out. With less than an hour to spare before Trump's deadline to strike Iran expired on Tuesday, the United States and Iran announced a two-week ceasefire. It was a last-minute reprieve that sent shockwaves through global markets—oil prices plummeted, stock exchanges surged, and for a brief moment, the region exhaled. As part of the agreement, Tehran committed to reopening the Strait of Hormuz, the critical waterway that had been choked off for weeks, strangling global commerce. Pakistan had brokered the deal, with Prime Minister Shehbaz Sharif hosting delegations from both sides for talks scheduled to begin in Islamabad on Friday, aimed at hammering out a permanent settlement.

But the ceasefire lasted only hours. On Wednesday morning, before dawn had fully broken, Israel launched what it called its largest coordinated strike of the entire conflict, hammering Lebanon with waves of attacks across residential neighborhoods and commercial districts in and around Beirut. The death toll climbed quickly—254 people killed in a single day, according to Lebanese officials. An Al Jazeera correspondent was struck down in Gaza. Two Lebanese journalists were killed. The strikes came without warning, hitting dense civilian areas. Israel claimed it was targeting Hezbollah commanders, but the scale and indiscriminate nature of the assault suggested something broader was underway.

Iran's response was swift and furious. Within hours of the Israeli strikes, Tehran announced it was closing the Strait of Hormuz again, reversing the reopening it had just agreed to. Foreign Minister Abbas Araghchi issued a stark ultimatum: the United States had to choose between the ceasefire and continued war through Israel. "The Iran–U.S. Ceasefire terms are clear and explicit: the U.S. must choose—ceasefire or continued war via Israel. It cannot have both," he wrote. Iranian forces began identifying targets for retaliation. State media reported that Iran would withdraw from the ceasefire entirely if the strikes on Lebanon continued. Revolutionary Guards issued warnings that their "hand is on the trigger," ready to respond with greater force.

The disagreement over Lebanon's status became the fault line threatening to collapse the entire agreement. Iran insisted that a ceasefire in Lebanon was a fundamental condition of any deal—it was part of Tehran's ten-point framework for ending the war. The United States, through Vice President JD Vance, flatly denied this. Vance said Washington had never agreed to include Lebanon in the ceasefire, though he added that Israel had agreed to "check itself" in the country. Netanyahu went further, declaring that the ceasefire explicitly excluded Hezbollah and that Israel would "continue to strike them." He said Israel remained prepared to "return to combat at any moment required" and that "our finger remains on the trigger."

The fragile diplomatic structure began to crack under the weight of these contradictions. France's President Macron called both Trump and Iran's President Pezeshkian, insisting that any credible ceasefire must cover Lebanon. European leaders issued a joint statement demanding that the truce apply across all areas of confrontation. Pakistan's Prime Minister Sharif pleaded with all parties to exercise restraint and respect the two-week pause "so that diplomacy can take a lead role." But the damage was already done. Iran's state media reported that air defenses had been activated in Tehran and other cities. Explosions were heard in Isfahan. Drones and missiles were launched at Gulf states—Qatar intercepted incoming fire, Kuwait reported attacks on petroleum facilities, Saudi Arabia said it had shot down nine drones.

Meanwhile, the Strait of Hormuz remained a flashpoint. Shipping sources reported that vessels had received threatening messages claiming to be from the Iranian Navy, warning that any ship attempting passage without Tehran's permission would be "targeted and destroyed." Eight hundred vessels were still trapped in the waterway, unable to move. The White House demanded that Iran reopen it "immediately, quickly, and safely," calling any closure "completely unacceptable." But Iran's Ports and Maritime Organization made clear that any passage would require coordination with the Revolutionary Guards.

The two delegations were still scheduled to meet in Islamabad on Saturday—Vance leading the American team, Parliament Speaker Mohammad Ghalibaf and Foreign Minister Araghchi heading Iran's delegation. But the trust that had barely existed before the ceasefire was now in tatters. Israeli Foreign Minister Gideon Saar said he saw no way to bridge the positions of the US and Iran. A senior US official dismissed Iran's published ten-point ceasefire plan as not the actual agreement, saying the real terms would be negotiated "behind closed doors." Trump himself warned of 50 percent tariffs on any country supplying weapons to Iran. The ceasefire, which had seemed like a breakthrough just hours earlier, had become a test of whether either side could actually enforce restraint on its allies—and whether the diplomatic process could survive the first real crisis.