A fragile two-week ceasefire agreement between the United States and Iran faces severe strain as conflicting interpretations of the truce's scope, continued Israeli military operations in Lebanon, and disruptions to shipping traffic through the Strait of Hormuz threaten to unravel diplomatic progress. As U.S. and Iranian officials prepare for high-stakes negotiations in Pakistan, the death toll from a massive wave of Israeli airstrikes on Lebanon has surpassed 300, according to Lebanese health officials and international media reports.
The ceasefire, brokered by Pakistan on Tuesday, was intended to halt hostilities between the U.S. and Iran for a two-week period. However, significant disagreement has emerged regarding its applicability to the conflict between Israel and Hezbollah in Lebanon. Iranian officials, along with Pakistani mediators, assert that the agreement covers all fronts of the regional conflict, including Lebanon. Conversely, Israeli Prime Minister Benjamin Netanyahu has insisted that the truce does not apply to Israel's operations against Hezbollah, maintaining that the militant group remains a target.
On Wednesday, Israel launched what has been described as its heaviest and deadliest attack on Lebanon since the broader conflict began. The strikes, which targeted densely populated areas in central Beirut and other locations, killed at least 250 people, with the Lebanese Ministry of Health reporting a death toll that has since risen above 300. The intensity of the assault, characterized by journalists as "10 minutes of terror," has drawn sharp condemnation from Iran and European leaders, who warn that the attacks constitute a violation of the ceasefire.
"Iran and Pakistan say the agreed-upon pause in hostilities applied to Lebanon," a report from Democracy Now noted, while Israeli authorities maintain the agreement was strictly between Washington and Tehran. In response to the escalating violence, Iran has warned that continued Israeli aggression could force it to withdraw from the ceasefire. Iranian President Masoud Pezeshkian stated that the attacks render negotiations "meaningless," while Deputy Foreign Minister Ali Bagheri told the BBC that the U.S. must choose between "war and ceasefire."
Simultaneously, the implementation of the truce has been complicated by tensions over the Strait of Hormuz. President Donald Trump accused Iran on Thursday of "doing a very poor job" of honoring the agreement, specifically citing reports that oil tankers are being restricted or charged fees to pass through the vital waterway. Shipping traffic in the strait has dropped to a virtual standstill, with only a handful of vessels passing since the ceasefire was announced. Iran has attributed the slowdown to safety concerns, including alleged sea mines, while U.S. officials and British Prime Minister Keir Starmer have rejected any toll system as illegal under international law.
Amidst the diplomatic friction, President Trump has issued stern warnings to Tehran. In a series of posts on Truth Social and statements to the press, Trump declared that U.S. military forces are being "loaded up" with ammunition and remain positioned near Iran until a "real agreement" is reached. He threatened that if talks in Pakistan fail or if Iran continues to obstruct shipping, the U.S. would resume strikes that would be "bigger and better" than previous operations.
Despite the volatility, diplomatic channels remain open. Netanyahu announced on Thursday that Israel has authorized direct negotiations with Lebanon "as soon as possible," focusing on the disarmament of Hezbollah and the establishment of a peace agreement. The State Department confirmed that it will host meetings in Washington to facilitate these talks. However, Lebanese officials have stated they will only participate if a ceasefire is in place.
The situation has drawn international attention, with European leaders demanding that the U.S. ceasefire include Lebanon and condemning Israel's bombardment. The Guardian reported that Britain, France, and the EU have expressed concern over the potential unraveling of the truce. Meanwhile, Trump has described himself as "very optimistic" about reaching a permanent peace deal with Iran, even as the immediate future of the ceasefire remains uncertain.
As diplomats gather in Pakistan this weekend, the window for de-escalation appears narrow. The combination of a disputed ceasefire scope, ongoing high-casualty strikes in Beirut, and the strategic chokehold on global oil shipping has created a volatile environment where diplomatic success is far from guaranteed.