Benjamin Netanyahu has openly challenged the diplomatic framework agreed between Washington and Tehran, declaring that Israeli forces will not withdraw from southern Lebanon and publishing a military map of a declared “security zone” that extends roughly ten kilometres inside Lebanese territory. The move came a day after the United States and Iran signed a memorandum of understanding intended to end hostilities across all fronts, including an explicit commitment to Lebanon’s territorial integrity. Netanyahu’s insistence that the army remain “as long as Israel’s security needs require” places Jerusalem in direct confrontation with the American-Iranian accord.

From Washington, the memorandum is a cornerstone of regional de-escalation, designed to freeze the conflict that erupted after Hezbollah opened fire in support of Iran. Tehran views a full Israeli withdrawal as integral to any final settlement and has threatened a “harsh response” to violations. In Beirut, the prime minister’s words confirm that the true test will be whether Israel can be compelled to relinquish occupied ground. Israeli officials, however, describe the pact as deeply disappointing; two officials told Reuters that Israel is negotiating with the United States to maintain its troop presence.

On the ground, the gap between diplomacy and reality remains stark. Although violence has diminished since Monday, an Israeli drone struck a car in Kfartebnit on Thursday, killing at least one person, while another strike hit Haddatha. Hezbollah attacks continue: the Israeli military confirmed a reservist was killed and seven wounded, including senior officers, by an explosive device near the Litani River on Wednesday. These incidents underscore the fragility of a ceasefire that exists more on paper than in the villages of the south.

The Israeli military’s internal recommendations urge no immediate concessions: it seeks freedom of action across Lebanon, an active buffer zone, and complete demilitarisation. Yet the accord gives Iran a diplomatic lever to demand withdrawal. Netanyahu’s defiance has thrown the memorandum’s durability into question. Whether it can evolve into a sustainable ceasefire—or unravel under competing security imperatives—will depend on Washington’s ability to bridge the chasm between Israel’s demand for a physical security zone and the Iranian-Lebanese insistence on full sovereignty.