BEIRUT: Lebanon’s Hezbollah movement said on Sunday it launched its “largest” air operation, sending explosive drones at a mountaintop Israeli military intelligence base in the annexed Golan Heights.
It is the latest incident among escalating cross-border exchanges of fire that have triggered global alarm.
Hezbollah, an Iran-backed Hamas ally, has traded almost daily fire with Israeli forces since the Palestinian militant group’s Oct. 7 attack on Israel triggered war in the Gaza Strip.
Announcing “the largest operation” carried out by its aerial forces, Hezbollah said in a statement that its fighters sent “multiple, successive squadrons of drones to target the reconnaissance center” on Mount Hermon.
The Israeli military said an explosive drone “fell in an open area in the Mount Hermon area” but there were “no injuries.”
Attacks as well as rhetoric have escalated in recent weeks, spurring fears of an all-out conflict between Israel and Hezbollah which last went to war in 2006.
The Lebanese movement said the drone attack was part of its “response” to the killing of an operative in a strike Saturday deep into east Lebanon around 100 kilometers (60 miles) from the border.
The Mount Hermon attack targeted intelligence systems, “destroying them and starting a major fire,” Hezbollah said.
Israeli Defense Minister Yoav Gallant visited troops on Mount Hermon earlier on Sunday, his office said.
In two additional statements, the military said its air defenses “successfully intercepted” several “aerial targets” that crossed from Lebanon after sirens sounded in the Golan Heights area.
Israel seized the Golan Heights from Syria in 1967 and later annexed it in a move largely unrecognized by the international community.
The Israeli strike on Saturday killed “a key operative in Hezbollah’s Aerial Defense Unit,” the military has said.
Throughout Sunday, Hezbollah announced four more attacks on Israeli military sites across the border with barrages of rockets as well as some guided missiles. Israeli authorities reported four wounded.
Gallant, in a video from Mount Hermon, said that “even if there is a ceasefire” in Gaza, “we will continue fighting and doing everything necessary to bring about the desired result” in the campaign against Hezbollah.
The cross-border violence has killed at least 497 people in Lebanon, mostly fighters but also including 95 civilians, according to an AFP tally.
On the Israeli side, at least 16 soldiers and 11 civilians have been killed, according to the authorities.
Tens of thousands of residents have been displaced from the border areas in both southern Lebanon and northern Israel.

LONDON: British Prime Minister Keir Starmer on Sunday called on all sides to exercise “caution” on the border between Israel and Lebanon, in his first telephone conversation since he was elected with Israeli Prime Minister Benjamin Netanyahu.
Starmer told his counterpart the “situation on the northern border of Israel was very concerning, and it was crucial all parties acted with caution,” a spokesperson for his 10 Downing Street office said.
Lebanon’s Hezbollah movement on Sunday fired another 20 rockets at northern Israel, leaving one person injured there, the latest cross-border attacks launched in solidarity with Hamas.
Hezbollah has traded near daily fire with the Israeli army across Lebanon’s southern border since its Palestinian ally Hamas attacked Israel last year, triggering the war in Gaza.
Discussing the conflict, the prime minister reiterated his condolences for the mass loss of life during the October 7 attacks, the spokesperson said.
“He then set out the clear and urgent need for a ceasefire, the return of hostages and an immediate increase in the volume of humanitarian aid reaching civilians.”
In his conversation with Netanyahu, Starmer added that it was also “important to ensure the long-term conditions for a two-state solution were in place, including ensuring the Palestinian Authority had the financial means to operate effectively.”
Efforts toward a truce are continuing with US, Qatari and Egyptian mediators hoping to halt the worst-ever Gaza war, which has caused mass civilian casualties and devastated the coastal territory.
The spokesperson said the prime minister also spoke by phone to Palestinian president Mahmud Abbas.
Starmer told Abbas that his “longstanding policy on recognition to contribute to a peace process had not changed, and it was the undeniable right of Palestinians.”
The October 7 attack on southern Israel resulted in the deaths of 1,195 people, mostly civilians, according to an AFP tally based on Israeli figures.
The militants also seized 251 hostages, 116 of whom remain in Gaza, including 42 the military says are dead.
In response, Israel’s military offensive has killed at least 38,153 people in Gaza, also mostly civilians, according to the health ministry in the Hamas-ruled territory.