SOUTHERN LEBANON — The United States and Israel oppose the renewal of the United Nations Interim Force in Lebanon (UNIFIL) mandate, which is scheduled to expire on December 31, 2026. This opposition comes as the mission faces operational constraints in southern Lebanon during ongoing conflict and humanitarian challenges.

Israel has established a restricted buffer zone beyond the "yellow line" in southern Lebanon, covering approximately 6% of the country's territory. The buffer zone is up to five miles wide in some places, and Lebanese civilians are prohibited from entering the area. Israel states the purpose of the buffer zone is to prevent Hezbollah from firing rockets into northern Israel.

The conflict between Israel and Hezbollah began in March 2026 when Hezbollah fired rockets at Israel. The Lebanese government states that more than 4,300 people have been killed in the conflict since that time. The government also reports that more than 1.2 million people have been displaced by the fighting.

Major General Diodato Abagnara of Italy is the head of UNIFIL. He emphasized the continued necessity of the mission despite political pressures. It's not a long time.

The presence of United Nations in the South is very, very essential. And according to me, more now than ever, Abagnara said.

More than half of UNIFIL's posts lie within areas where the Israel Defense Forces took control after clearing Hezbollah infrastructure. French UNIFIL peacekeepers patrol through the towns of Houla, Kfar Kila, and Odaisseh. Sergeant Audric, a French peacekeeper whose first name was withheld due to security policy, noted the changing dynamics on the ground.

"Today, for the first time in several months, we are heading into the eastern sector. It is an opportunity for us," Audric said. He added that the ceasefire negotiations had improved mobility. Since the negotiations began, we have been able to reopen this sector and finally regain our freedom of movement following the ceasefire, he said.

Spanish peacekeepers run a medical clinic in Mari, southern Lebanon, as part of a Civil-Military Cooperation initiative. Lieutenant Colonel Sebastián Dorado Santos described the impact of restrictions on local populations. The yellow line does not exist for us, but we have to mark it on the map so that we can visualize it, Santos said.

Santos described the economic difficulties facing residents. It has disrupted normal life. Many civilians are unable to go to work or carry out their daily activities. The harvest season is approaching, but they cannot access their fields," he said."

UNIFIL has resumed providing basic medical assistance in areas where access remains severely restricted. Israeli forces have been carrying out demolitions in Mansouri since ordering residents to leave in June. Abagnara criticized these actions as contrary to international mandates. "The demolitions are another violation of U.N. Security Council resolutions on Lebanon," he said. Israel's military states it is destroying Hezbollah infrastructure across southern Lebanon to prevent future attacks.

UNIFIL is working with the U.N. country team to ensure humanitarian assistance in areas where Hezbollah has embedded itself. The force has provided security escorts for humanitarian aid convoys to residents in predominantly Christian southern Lebanese towns. Abagnara addressed the potential end of the current mandate structure.

Why It Matters

The potential non-renewal of UNIFIL's mandate affects the maintenance of stability along the Israel-Lebanon border. With more than half of UNIFIL's posts located in areas controlled by the Israel Defense Forces, the operational landscape has shifted since the mission's expansion under Resolution 1701 in 2006. The humanitarian situation remains critical, with over 1.2 million displaced persons and restricted access to agricultural lands affecting local livelihoods.

The disagreement between the United States, Israel, and other stakeholders reflects broader geopolitical tensions regarding the role of international peacekeeping in active conflict zones. The establishment of a buffer zone covering 6% of Lebanese territory further complicates the implementation of previous agreements. The outcome of the mandate review will determine whether UNIFIL continues its current operations or transitions to a different framework for monitoring the border.

Timeline

In 1948, Houla was the site of a massacre in which Israeli forces killed dozens of Lebanese civilians. The United Nations Interim Force in Lebanon (UNIFIL) was created in 1978 to verify Israel's troop withdrawal after its first occupation of Lebanon. Hezbollah is a militant group created in 1982 to counter a second Israeli invasion of Lebanon.

The "blue line" is the demarcation line drawn by the U.N. for Israel's withdrawal from southern Lebanon in 2000. Israel ended an 18-year occupation of southern Lebanon in 2000. Israel closed the Fatima Gate crossing when its forces withdrew from southern Lebanon in 2000.

The U.N. expanded UNIFIL's mandate 20 years ago to include monitoring adherence to a ceasefire between Israel and Hezbollah. U.N. Security Council Resolution 1701 was adopted in 2006 to end the war between Israel and Hezbollah.

What's New

Major General Diodato Abagnara stated that "the demolitions are another violation of U.N. Security Council resolutions on Lebanon." Israel's military states it is destroying Hezbollah infrastructure across southern Lebanon.

He also noted that "there are other United Nations entities here in the south, and so what is very important for us (is) to conduct a very smooth transition to different entities, or for the future of a new mission." UNIFIL has provided security escorts for humanitarian aid convoys to residents in predominantly Christian southern Lebanese towns. He emphasized that "the presence of United Nations in the South is very, very essential. And according to me, more now than ever."

How Sources Differ

Israel presents differing details regarding its military operations and casualties. The Israel Defense Forces statement on infrastructure destruction states that Israel's military is destroying Hezbollah infrastructure across southern Lebanon. The Israel Defense Forces casualty report states that 39 soldiers, one military contractor, and two civilians have been killed in Hezbollah attacks since March 2026.