The U.S.-Iran ceasefire talks in Islamabad collapsed amid deep mistrust and incompatible priorities, with Israel emerging as the decisive spoiler. Netanyahu opposed the inclusion of Lebanon in the truce, fearing it would constrain Israeli operations against Hezbollah — a concern that led to over 100 strikes on Beirut hours after the announcement. The U.S. sought de-escalation and a swift diplomatic off-ramp, while Israel pursued a broader campaign to dismantle Hezbollah and fracture Iran’s 'axis of resistance.' Israel’s premature declaration of victory over Hezbollah proved hollow when attacks resumed, exposing strategic overreach and eroding public confidence. Meanwhile, U.S. plans for Iranian port blockades signal escalating pressure, even as diplomatic channels with Lebanon remain closed. Crucially, the episode underscores that any lasting regional agreement must contend not only with Tehran but also with Jerusalem’s red lines — and that without Israeli buy-in, even temporary truces are unsustainable.