US-Iran Ceasefire Under Strain as Israel Strikes Lebanon and Hormuz Shipping Remains Uncertain
The fragile two-week ceasefire between the United States and Iran is already under severe strain, with Israel continuing to strike targets in Lebanon, Iran imposing restrictions on Strait of Hormuz shipping, and fundamental disagreements emerging over the scope and terms of the agreement.
The ceasefire, brokered by Pakistan after 40 days of US-Israeli strikes on Iran, came into effect on Wednesday 8 April. But within hours of its announcement, the deal's durability was being questioned as Israeli airstrikes in Lebanon killed more than 200 people, including four Lebanese soldiers and an Al Jazeera correspondent, and Iran warned that oil tankers would be destroyed if they attempted to pass through the Strait of Hormuz without permission.
The Ceasefire Terms
The agreement, announced by US President Donald Trump, stipulated a suspension of bombing and attacks on Iran for two weeks, contingent on Iran agreeing to the "complete, immediate and safe opening" of the Strait of Hormuz. Trump declared that the US had "met and exceeded all military objectives" and was working towards a "definitive agreement concerning long-term peace with Iran."
Iran's foreign minister Abbas Araghchi confirmed that if attacks ceased, Iranian armed forces would "cease their defensive operations" and safe passage through the strait would be possible. However, Iran subsequently imposed restrictions, stating it would allow no more than 15 vessels per day to pass through — far below normal traffic levels — and that fees would be charged for transit.
The Lebanon Dispute
The most immediate flashpoint is Lebanon. The US and Israel maintain that the ceasefire does not include Lebanon, where Israel has continued to strike Hezbollah targets. Israeli Prime Minister Benjamin Netanyahu stated that Israel would continue to strike Hezbollah "wherever necessary."
Iran, Pakistan, and the UK's Foreign Secretary argue that Lebanon is included in the ceasefire. Iranian President Masoud Pezeshkian called Israeli strikes on Lebanon a "blatant violation" of the agreement, warning that their continuation would "render negotiations meaningless." The UN warned that the ceasefire is at "grave risk" if Israel continues attacking Lebanon.
Nuclear Enrichment Remains a Sticking Point
Iran's uranium enrichment programme remains a fundamental point of contention. Trump has demanded "no enrichment of uranium" in Iran as part of any lasting deal. Iran's atomic energy chief Mohammad Eslami flatly rejected this, stating that US and Israeli demands to restrict Iran's enrichment programme "will not come true." Iran insists it is not seeking nuclear weapons but is willing to negotiate limits in exchange for sanctions relief.
Why It Matters
The conflict has had profound consequences for the global economy. The effective closure of the Strait of Hormuz since February caused Brent crude prices to surge above $100 per barrel, driving inflation higher across Europe and the UK. While Wednesday's ceasefire announcement triggered a sharp fall in oil prices, analysts warn that any breakdown in talks could rapidly reverse those gains. The IMF has projected global economic growth to slow to 3.1% in 2026, partly due to the tariff and energy price shocks of the past year.
What's Next
Negotiations between the US and Iran are expected to begin in Islamabad on 10 April, mediated by Pakistan. Iran has presented a 10-point proposal which Trump described as a "workable basis" for discussion. Saudi Arabia and Iran's foreign ministers held their first call since the start of the war — a significant diplomatic development given Saudi Arabia's earlier stance during the conflict. The coming days will be critical in determining whether the ceasefire holds or collapses.
Follow the latest developments at The Guardian's live coverage of the Iran ceasefire.
