The US-Iran war has entered an unstable pause

A fragile US-Iran ceasefire is already under strain as Israeli strikes in Lebanon and rising regional tensions threaten to unravel negotiations, raising fears that a broader Middle East conflict could resume.

The Iran war has entered a volatile pause. The fragile ceasefire is holding – but fighting continues to spread beyond Iran. The latest crisis was triggered by a dramatic warning from Donald Trump that pushed Washington into panic mode. He ominously warned on Tuesday that “a whole civilization” could be destroyed if a deal was not reached, prompting urgent lobbying in Congress and across the political spectrum for de-escalation.

That pressure helped produce an 11th-hour agreement: the United States and Iran announced a two-week ceasefire that day, contingent on reopening the Strait of Hormuz and entering negotiations. The truce temporarily eased fears of a broader regional war and even led to a drop in oil prices, although experts warn it won’t immediately stabilise them.

But the cracks started to show before the world could catch its breath.

The biggest fracture emerged almost instantly. Israel continued military operations in Lebanon, arguing that the ceasefire applied only to Iran.

Quick explainer: Lebanon matters here because it’s home to Hezbollah, Iran’s most powerful regional ally and a direct enemy of Israel. That means fighting in Lebanon is essentially Iran and Israel clashing by proxy, even when Iran itself isn’t directly involved. In other words: separate battlefield, same war.

Massive Israeli airstrikes on Beirut and other areas killed more than 250 people, with officials saying the campaign targeted Hezbollah infrastructure and would continue regardless of the Iran deal. Trump’s administration also stated that Lebanon was a “separate skirmish” not covered by the truce, deepening disagreements over what the ceasefire actually meant.

Iran reacted angrily, warning that continued Israeli operations could collapse negotiations. The strikes in Lebanon, combined with renewed tensions in the Persian Gulf, have already put the ceasefire under strain; Tehran has called further talks “unreasonable” under the current conditions.

Meanwhile, Trump has issued fresh warnings that a failure of the peace process could lead to “dramatic military escalation” – this, even as negotiations in Pakistan are being planned. Analysts describe the ceasefire more as a tactical pause than a peace deal.

The war is far from over. If Israel continues its Lebanon campaign and Iran retaliates indirectly through its regional allies, the ceasefire could collapse quickly. If negotiations hold, however, the current pause could evolve into a broader settlement covering Iran’s nuclear programme, regional militias, and maritime security in the Strait of Hormuz.