Israeli troops have captured a strategic mountain topped with a Crusader-built castle in southern Lebanon in the deepest incursion into the country in more than a quarter-century, the military said on Sunday (May 31, 2026).

The taking of Beaufort castle, near the city of Nabatiyeh, followed days of airstrikes and intense fighting in nearby villages between Israeli troops and Hezbollah militants.

The capture marked a major Israeli advance in the latest Israel-Hezbollah war, which began on March 2, when Hezbollah fired rockets into northern Israel two days after the U.S. and Israel attacked its main backer, Iran.

Since then, Israel has launched a ground invasion, capturing dozens of Lebanese villages and towns close to the border. Hezbollah has launched thousands of missiles and drones at Israeli soldiers in southern Lebanon and northern Israel.

The Israeli push came despite a nominal ceasefire that has been in place since April 17 and just days before Lebanon and Israeli hold their next round of direct talks in Washington starting Tuesday.

Lebanese Parliament Speaker Nabih Berri, a key Hezbollah ally, said he can guarantee the militant group's “full, comprehensive and immediate commitment to a ceasefire."

“But who will force Israel to stop its aggression?” he said in a statement on his television station, NBN.

French Foreign Minister Jean-Noël Barrot requested an emergency meeting of the United Nations Security Council to discuss Israeli military operations in Lebanon, which he described as “unacceptable.”

“Nothing can justify the prolongation of Israeli military operations in Lebanon and its increasingly deep occupation of Lebanese territory,” Mr. Barrot said on Sunday (May 31, 2026) on French television BFM TV.

Diplomats said the council meeting might take place Monday (June 1, 2026) afternoon, speaking on condition of anonymity ahead of a formal announcement.

A historic and strategic fortress

The Israeli military's Arabic-language spokesperson, Avichay Adraee, posted photographs on X showing Israeli troops walking outside the castle, and Defense Minister Israel Katz wrote on X that they raised an Israeli flag over the castle. Israeli troops previously captured the castle in 1982 and held it until they withdrew from Lebanon in 2000.

“Twenty six years after the withdrawal from the security zone in Lebanon, the Israeli flag has returned to fly on the peaks that overlook the Galilee towns,” Katz said Sunday at a memorial ceremony for Israeli soldiers killed in its previous occupation of southern Lebanon.

Katz said Israel intends to hold the castle as its troops work to destroy thousands more homes that he says were used by Hezbollah and other military infrastructure in southern Lebanon.

The Beaufort fortress, perched high atop Lebanon's rolling green hills and overlooking the Litani River, has been a strategic military asset for centuries.

Built as a Crusader castle around the 12th century on top of previous fortifications, it has also been used by Saladin's Jerusalem army, Mamluks, Ottomans, the French mandate and the Palestine Liberation Organization. The Crusaders named it Beaufort, which is Old French for “beautiful fortress.” The 1982 capture of the castle from the PLO was a major victory for the Israeli military, which was then led by Defense Minister Ariel Sharon, who later became prime minister. At the time, the Israeli army pushed all the way north and occupied Beirut.

In 2000, the castle was partially restored and opened to visitors.

During the previous Israel-Hezbollah war in 2024, UNESCO gave enhanced protection to 34 cultural sites in Lebanon, including Beaufort Castle, to safeguard them from damage.

The castle is a few kilometers north of the Israel border and overlooks wide parts of southern Lebanon and northern Israel. In Arabic, it is called Al-Shaqif castle, an old Syriac word referring to the formidable rocky area.

Israel expands invasion in Lebanon

In recent days, Israel has expanded the scope of its operations in Lebanon, sending troops across the Litani River, which previously served as a de-facto boundary, and demanding that residents leave much of southern Lebanon.

“The occupation of Beaufort is a dramatic stage and a dramatic shift in the policies we are leading,” Israeli Prime Minister Benjamin Netanyahu said Sunday, citing the military occupation of security zones in Syria, Lebanon and Gaza along Israel's borders. He said Israel has killed 3,000 Hezbollah militants since the start of the war. Hezbollah has not disclosed its casualty numbers.

Israel has designated the area from the Litani up to the Zahrani River a combat zone. Some residents have already left the area due to intense strikes in recent days, but people remain.

Israeli troops have been advancing for days in villages close to Beaufort castle. They are now about 5 kilometers (3 miles) from Nabatiyeh, a major center in southern Lebanon. They have called on people to leave that area, as well as the coastal city of Tyre, the country's fourth-largest city, and its surroundings.