BEIRUT – Senior officials from Iran have escalated their criticism of Israel’s expanding military campaign in Lebanon, warning that continued aggression could collapse diplomatic negotiations and lead to a direct military confrontation.
The surge in rhetoric follows a series of Israeli territorial gains in southern Lebanon, creating a volatile diplomatic environment as international efforts to secure a regional ceasefire struggle to hold.
IRGC Demands and Military Positioning
Brig. Gen. Esmail Qaani, commander of the Quds Force-the elite expeditionary wing of the Islamic Revolutionary Guard Corps (IRGC)-demanded that Israeli forces withdraw to the positions they held prior to the “40-day war” that began in early March.
“Supporting the resistance in Lebanon is the duty of all of us,” Qaani stated, according to the semi-official Tasnim news agency, framing Iran’s backing of armed groups along Israel’s northern frontier as part of its broader regional security doctrine.
In a separate statement issued Thursday, the IRGC called for an immediate cessation of attacks on the Lebanese population and urged Israel to recognize Lebanon’s territorial integrity, citing Beirut’s right to control its borders under the United Nations-endorsed framework of UN Security Council Resolution 1701, which ended the 2006 war and set out rules governing military activity along the frontier.
Diplomatic Ultimatums and US Relations
Tehran has signaled that its broader diplomatic engagements are now contingent on the situation in Lebanon, effectively tying battlefield developments to its negotiating posture with Western capitals. Mohammad Bagher Ghlibaf, Iran’s diplomatic lead, stated via X that Tehran would “halt the path of negotiations” if Israeli military actions continue.
Ghlibaf further threatened a “direct confrontation with the enemy” should the current campaign persist, language that Iranian officials have historically used to suggest the possibility of state-to-state escalation rather than proxy conflict alone.
Adding to the diplomatic pressure, Foreign Minister Abbas Araghchi linked the stability of relations with the United States to the conflict. Araghchi declared that the ceasefire between Iran and the US is “unequivocally a ceasefire on all fronts, including Lebanon,” in effect warning that Washington’s backing for Israel’s operations could jeopardize parallel talks on sanctions relief and regional security.
The Foreign Minister also warned of retaliation if Israeli strikes target the Lebanese capital, Beirut, a city that hosts key state institutions and foreign diplomatic missions and has previously been treated by international mediators as a red line in de-escalation efforts.
Strategic Seizure of Beaufort Castle
The diplomatic escalation follows a significant military development on the ground. On Sunday, Israeli forces pushed deeper into Lebanese territory, advancing toward and eventually seizing Beaufort Castle.
The Crusader-era fortress, located near the city of Nabatiyeh in southern Lebanon’s hill country, is a high-lying strategic point that overlooks key approach routes and nearby population centers. This marks the first time Israeli troops have held the castle since the end of Israel’s occupation of southern Lebanon, which lasted from 1982 to 2000, when Israeli forces withdrew under mounting domestic and international pressure.
The current military situation remains fluid:
- Israeli Position: Prime Minister Benjamin Netanyahu confirmed Monday that the military will continue striking southern Lebanon “as planned,” describing the operations as defensive measures aimed at enforcing red lines along the border.
- Truce Status: A frail deal announced in mid-April has seen repeated extensions brokered by international mediators, though Hezbollah is not a party to the agreement, limiting its ability to halt cross-border fire and raising questions over enforcement mechanisms.
- US Position: President Donald Trump has expressed frustration over the campaign, viewing it as a primary source of contention among Iranian authorities and a complicating factor for any renewed talks on nuclear and regional issues.
Despite the mid-April framework, both Israel and Hezbollah have continued to launch attacks across the border. Diplomats warn that without a more durable, monitored arrangement-potentially anchored in an updated mandate for UN peacekeepers building on the existing UNIFIL deployment-the combination of battlefield gains such as the capture of Beaufort Castle and hardening rhetoric from Tehran risks pulling regional actors into a broader confrontation.
