Israel’s military dramatically recast the geography of its Lebanon campaign on Wednesday, declaring all territory south of the Zahrani River a “combat zone” and ordering the complete evacuation of the coastal city of Tyre — a UNESCO-listed urban centre of some 200,000 people, swollen by displaced families from border villages. The proclamation, delivered in Arabic by an Israeli military spokesman, came as the air force pounded southern and eastern Lebanon with more than 120 strikes in a single day, the heaviest wave of bombardment since a US-brokered ceasefire took effect on 16 April. Lebanese health authorities counted at least 31 dead on Tuesday alone, among them women and children buried in the rubble of Burj al-Shamali, while warplanes circled low over towns such as Baysarieh, where residents climbed to their rooftops to watch columns of smoke rise from nearby hills.

The ground offensive, too, has broken through its previous limits. Israeli troops advanced north beyond the informal “yellow line” buffer zone — an area modelled on the military cordons used in Gaza, containing 55 evacuated Lebanese villages — and pushed deeper into the interior. Prime Minister Benjamin Netanyahu, having ordered commanders to “press the pedal even harder” and “crush” the Iran-backed militia, justified the escalation by accusing Hezbollah of repeated ceasefire violations, including the launch of attack drones at Israel’s northern border. Hezbollah, which has refused to discuss disarmament, claimed its fighters were engaging Israeli forces north of the Litani River, roughly 30 kilometres from the frontier, while its patron Iran accused the United States of breaching a separate truce by striking its southern territory.

Viewed from Beirut, the sense of resignation is palpable. The forced displacement of hundreds of thousands of civilians, the destruction of symbols such as the 900-year-old Beaufort Castle caught in the crossfire, and the evacuation order for Tyre — whose Palestinian refugee camps were also named — have extinguished any remaining hope that the mid-April truce signalled a durable pause. Lebanese analysts note that even the political wing of Hezbollah, which the European Union distinguishes from its armed branch, has signalled that it expects a protracted conflict, impervious to the diplomatic choreography between Tehran and Washington.

That choreography now faces acute strain. Analysts in London and Brussels warn that Israel’s expanded campaign directly complicates the delicate US-Iran talks aimed at a temporary peace framework. For an administration in Washington already navigating a brittle truce, the spectacle of Tyre being emptied by military decree and the Bekaa Valley aflame tests the credibility of American mediation. Yet on the ground, from the Zahrani River to the historic citadels of the south, the logic of escalation is overwhelming the architecture of ceasefire.