Two top Israeli ministers from Prime Minister Benjamin Netanyahu's coalition government on Thursday rejected a proposal for a ceasefire in Lebanon and called for continuing the fight against Hezbollah.

The United States, European Union and other allies including several Arab states issued a joint call for a 21-day halt in fighting in Lebanon after Israeli air strikes on Iran-backed Hezbollah killed hundreds and displaced tens of thousands in Lebanon this week.

The appeal for the three-week ceasefire came hours after Israeli military chief, Lieutenant General Herzi Halevi, on Wednesday told soldiers to prepare for a possible ground offensive against Hezbollah.

Israel's far-right Finance Minister Bezalel Smotrich, a key member of the cabinet, opposed the ceasefire proposal, insisting that continuing the war against Hezbollah was the only way forward.

Netanyahu's coalition relies on the support of Smotrich and other far-right members who consistently also opposed a truce in the Gaza war, which has not stopped.

"The campaign in the north should end with a single result: crushing Hezbollah and elimination of its ability to harm the residents of the north," Smotrich said on social media platform X.

"The enemy must not be given time to recover from the heavy blows it has suffered and reorganise itself to continue the war after 21 days," he said.

"Hezbollah's surrender or war -- this is the only way to bring back the residents and security to the north and the country."

In a separate statement on X, Foreign Minister Israel Katz also opposed any halt to fighting.

"There will be no ceasefire in the north. We will continue to fight against the Hezbollah terrorist organization with all our strength until victory and the safe return of the residents of the north to their homes," Katz said in a post on social media platform X.

Moments earlier, Israeli Prime Minister Benjamin Netanyahu's office issued a statement saying he had "not even responded" to the truce proposal, and that he had ordered the military "to continue the fighting with full force."

The United States, France and other allies issued a joint statement calling for a 21-day halt in the fighting, with President Joe Biden, his French counterpart, Emmanuel Macron, and other allies meeting on the sidelines of the UN General Assembly in New York.

The situation in Lebanon has become "intolerable" and "is in nobody's interest, neither of the people of Israel nor of the people of Lebanon," the statement said.

On the ground, there was no let-up in the violence.

On Thursday, the Israeli military said it had struck "approximately 75 terror targets" in the Bekaa Valley in eastern Lebanon and the south, both Hezbollah bastions that have seen a huge exodus people fleeing their homes in recent days.

One strike near the ancient city of Baalbek killed at least nine people, Lebanon's health ministry said, as the official National News Agency described the overnight bombing of the area as "the most violent" of recent days.

"It was indescribable, it was one of the worst nights we've lived through. You think there's just a second between life and death," said Fadia Rafic Yaghi, 70, who owns a shop in Baalbek.

The Israeli military also said around 45 rockets had been fired from Lebanon, adding that some had been intercepted while others had landed in unpopulated areas.

Hezbollah said that it had targeted defence industry complexes near the city of Haifa in northern Israel, saying it was "defending Lebanon and its people," after rocketing the same complex previously this week.

Possible ground offensive

Israel earlier this month said it was shifting its focus from Gaza, where it has been fighting a war with Hamas since the October 7 resistance campaign, to securing its border with Lebanon.

Hamas ally Hezbollah has been fighting Israeli troops across the Lebanon border since October, forcing tens of thousands of people on both sides to flee their homes.

Netanyahu announced earlier this month that ensuring the safe return of Israelis to their homes in the north was a priority.

He delayed his departure for New York until Thursday, where he is due to address the General Assembly.

On Wednesday, Israel's army chief told soldiers to prepare for a possible ground offensive against Hezbollah, as two reserve brigades were called up "for operational missions in the northern arena."

"We are attacking all day, both to prepare the ground for the possibility of your entry, but also to continue striking Hezbollah," Lieutenant General Herzi Halevi said.