Israel’s military declared the entire area of southern Lebanon south of the Zahrani River a combat zone on Wednesday, ordering residents to evacuate northwards in its most sweeping operational edict since the fragile ceasefire of mid-April. Heavy airstrikes on Tyre, Nabatieh and Bekaa Valley villages followed, triggering mass displacement. Viewed from Tel Aviv, the move is both a tactical escalation against Hezbollah and a signal that the ceasefire no longer constrains Israeli operations. But it also marks a deeper shift: by drawing a new line 40 kilometres north of the border, Israel is physically remaking Lebanon’s military geography in a way no diplomatic plan has yet envisaged.

Washington, however, has imposed its own limits. The Trump administration has told Israel it will not tolerate strikes on Beirut or its southern suburbs, fearing building collapses in the capital would ignite a regional conflagration and derail the fragile outreach to Iran. Lebanese President Joseph Aoun’s intensive diplomacy has secured assurances that state infrastructure and the airport will be spared. Yet American restraint does not cover the south, where the administration has effectively green-lit the expanding campaign — a distinction that leaves Lebanon negotiating under bombardment. Military delegations from all three countries are due in Washington this week for direct talks, even as Israeli warplanes reshape the ground beneath the diplomats’ feet.

Analysts in London and Beirut detect a strategic ambition beyond destroying Hezbollah’s capabilities. Israel, they contend, seeks to isolate the region south of the Zahrani, dismantling any residual Lebanese state authority so that its return would be conditional on terms dictated by Tel Aviv. Prime Minister Benjamin Netanyahu reportedly urged President Trump to step up pressure on Hezbollah, which he says exploited earlier US constraints. The operation threatens to entrench a permanent occupation of a depopulated strip. Meanwhile, Hezbollah has vowed resistance, and a senior party official threatened the Lebanese state itself — a sign that internal unity is cracking under the strain.

Iran’s calculus deepens the complexity. Tehran has striven to keep the Lebanese front tethered to the US-Iran dialogue, using Hezbollah’s endurance as a bargaining chip. The 45-day ceasefire is now a memory, and Iran’s demand for a halt to all regional wars falls on deaf ears in Washington. As Israeli forces push deeper and fibre-optic drone strikes remain hard to intercept, the conflict risks becoming a semi-permanent theatre that serves neither Lebanese sovereignty nor regional stability. Whether the coming talks can decouple the two tracks will decide if this is a prelude to a grand bargain or the hardening of a bloodier status quo.