Hezbollah fighters targeted Israeli soldiers near the Lebanese border village of Labbouneh with artillery shells and rockets on Wednesday, the group said, a day after Israel said it had killed two successors to Hezbollah's slain leader.
The Iran-backed group, which has been launching rockets against Israel for a year in parallel with the Gaza war and is now fighting it in ground clashes, said it had pushed the troops back.
The escalation in Lebanon and the ongoing one-year-old war between Israel and Hamas in Gaza has raised fears of a wider Middle East conflict that could suck in Iran and Israel's superpower ally the United States.
The Israeli military said three of its troops were severely injured on Tuesday and Wednesday during combat in southern Lebanon. Sirens sounded in northern Israel on Wednesday morning after Israel renewed bombing of Beirut's southern suburbs, a Hezbollah stronghold, overnight.
The conflict in Lebanon has escalated dramatically in recent weeks as Israel has carried out a string of assassinations of top Hezbollah leaders and launched ground operations into southern Lebanon that expanded further this week.
An Israeli military spokesperson declined to say how many troops were in Lebanon, but the military has announced four divisions are operating on the border, meaning that thousands of soldiers are deployed.
Overnight, Israel again bombed Beirut's southern suburbs and said it had killed a figure responsible for budgeting and logistics, Suhail Hussein Husseini.
The suburbs, once a densely-populated and thriving district, has been emptied of many of its residents by Israeli evacuation warnings. Many Lebanese draw parallels between the warnings and those seen in Gaza over the last year, prompting fears that Beirut could face the same scale of destruction.
BIDEN-NETANYAHU CALL
US President Joe Biden is expected to speak on Wednesday with Israeli Prime Minister Benjamin Netanyahu, according to a person familiar with the matter, with talks set to include discussion of any plans to strike Iran.
The Middle East has been on edge awaiting Israel's response to a missile attack from Iran last week that Tehran carried out in retaliation for Israel's military escalation in Lebanon. The Iranian attack ultimately killed no one in Israel and Washington called it ineffective.
Israel's retaliation will be a key subject of the call, with Washington hoping to weigh in on whether the response is appropriate, a separate person briefed on the discussions said.
The White House did not respond to a request for comment.
Biden has said he would think about alternatives to striking Iranian oil fields if he were in Israel's shoes. Last week, he also said he would not support Israel striking Iranian nuclear sites.
The bombardment has left more than 2,100 people dead in Lebanon, most of them in the last two weeks, and displaced roughly 1.2 million across the country.
Netanyahu said on Tuesday Israeli airstrikes had killed two successors to Hezbollah's slain leader Hassan Nasrallah, killed in an Israeli air attack on Beirut's southern suburbs on Sept. 27.
Netanyahu did not name them, but Israeli Defense Minister Yoav Gallant said Hashem Safieddine, the man expected to succeed Nasrallah, had probably been "eliminated". It was not clear whom Netanyahu meant by the second replacement.
Later, Israeli military spokesman Daniel Hagari said Israel knew Safieddine was in Hezbollah's intelligence headquarters when fighter jets bombed it last week and Safieddine's status was "being checked and when we know, we will inform the public."
Safieddine has not been heard from since that strike.
Hezbollah's deputy leader Naim Qassem said on Tuesday the group's capabilities were intact despite the "painful blows" inflicted by Israel's mounting military pressure.
Qassem said the group endorsed efforts by Lebanon's speaker of parliament and Hezbollah ally to secure a ceasefire, and conspicuously left out an oft-repeated condition of the group - that a Gaza ceasefire would have to be reached before Hezbollah put down its arms.
Netanyahu's office declined to comment on Qassem's remarks.
US State Department spokesperson Matthew Miller told a briefing in Washington that Hezbollah had "changed their tune and want a ceasefire" because the group is "on the back foot and is getting battered" on the battlefield.
Hezbollah is the most formidably armed of Iran's proxy forces across the Middle East and has been acting in support of Palestinian fighters Israel in Gaza.
The heightened regional tensions kindled a year ago by Palestinian armed group Hamas' attack from Gaza on southern Israel have escalated to include Lebanon and prompt several direct confrontations between Israel and Iran.
On Oct. 1, Iran fired missiles at Israel. On Tuesday, Iran warned Israel not to follow through on threats of retaliation.
