Tehran Warns 2026 U.S.-Iran Ceasefire on Brink of Collapse Over Exclusion of Lebanon

President Pezeshkian and Speaker Ghalibaf warn that the U.S.-Iran ceasefire will collapse if Israel continues strikes on Lebanon. Read the latest on the 2026 truce.

By: AXL Media

Published: Apr 9, 2026, 8:03 AM EDT

Source: Information for this report was sourced from The Times of Israel

The Fragility of the Islamabad Accords

Hours after the announcement of a two-week ceasefire intended to pause 40 days of intense conflict, Iranian leadership has signaled that the deal is in immediate jeopardy. President Masoud Pezeshkian stated on April 9, 2026, that ongoing Israeli operations in Lebanon constitute a fundamental violation of the agreement’s spirit. The President emphasized that Iran would not "abandon the Lebanese people" and suggested that diplomatic negotiations scheduled to take place in Pakistan would be undermined if the "Zionist regime" continued its aerial campaign against Hezbollah. The truce, facilitated by Pakistani Prime Minister Shehbaz Sharif, was meant to provide a humanitarian window, but the disagreement over its geographic scope has already sparked a fresh crisis.

Resistance Axis as a Non-Negotiable Condition

The ideological core of the dispute centers on Iran’s insistence that its regional allies are inseparable from its own national security. Parliament Speaker Mohammad Bagher Ghalibaf reinforced this stance in a scathing post on social media, asserting that Lebanon and the entire "Resistance Axis" form an integral part of the ceasefire framework. Ghalibaf warned that any continued violations would carry "explicit costs and strong responses" from Tehran. This interpretation directly clashes with the U.S. and Israeli position, which views the truce as a narrow "pause" in the direct U.S.-Israeli war on Iran that began on February 28, rather than a regional cessation of hostilities.

Retaliatory Closure of the Strait of Hormuz

In a move that immediately impacted global energy markets, Iran responded to Wednesday’s massive strikes on Beirut by reportedly re-closing the Strait of Hormuz. Despite initial promises of "safe passage" in coordination with Iranian forces, state media indicated the waterway was shuttered just hours after the ceasefire was signed. Foreign Minister Abbas Araghchi confirmed in a call with Pakistan’s army chief that the closure was a direct reaction to the "massacres in Lebanon," which saw over 182 people killed in a single day. The closure threatens to halt roughly 20% of global oil and LNG supplies, undoing the momentary relief felt by markets following President Trump’s ceasefire announcement.