Israel has portrayed the capture of a Crusader-era fortress as a turning point in its offensive against Hezbollah, but the operation has also sparked fears of a new quagmire in south Lebanon.

Israeli authorities praised the symbolism of the capture of Beaufort, perched atop a rocky outcrop, as they announced its capture in an assault documented by military drones.

Parliament Speaker Nabih Berri praised Tuesday Iran for insisting that a ceasefire in Lebanon remains a key condition for any deal with the United States.

Iran's parliament speaker and chief negotiator Mohammad Bagher Ghalibaf had said on Monday night that he and Berri had spoken by phone.

Parliament speaker Nabih Berri, a Hezbollah ally, will guarantee the Iran-backed group's adherence to a "global ceasefire" with Israel, his adviser told AFP on Tuesday.

Berri, who heads the Hezbollah-allied Amal party, has long acted as an intermediary between the group and the United States, which considers Hezbollah a "terrorist" organization.

The Israeli military on Tuesday warned residents of the southern Lebanese city of Nabatiyeh to evacuate ahead of planned strikes in the area.

"In light of the Hezbollah terrorist organization's violation of the ceasefire agreement, the IDF is compelled to act against it with force," the military's Arabic-language spokesman, Colonel Avichay Adraee, posted on X.

Lebanon's civil defense agency said Tuesday that six people had been killed in an Israeli strike on the south Lebanon village of Marwaniyeh the previous evening.

In a statement on Facebook, the agency said rescue operations had been ongoing since late Monday at the site of "a residential building that was targeted" in Marwaniyeh, near the coastal city of Sidon, adding that "these operations resulted in the removal of six bodies and the rescue of three wounded people".

U.N. chief Antonio Guterres said Monday that peacekeepers will be needed in Lebanon after the mandate of the current mission expires at year-end -- an option likely to face opposition from the United States and Israel.

Last August, the U.N. Security Council, under U.S. pressure, decided to end the mandate of the United Nations Interim Force in Lebanon (UNIFIL) on December 31, 2026.

A senior Iranian military officer said Tuesday that a resumption of hostilities with the United States was inevitable, as negotiations between Tehran and Washington appeared to stall.

"The United States demands our total surrender, and the Iranian nation will never surrender," said Mohammad Jafar Assadi, deputy head of Iran's central military command, Khatam al-Anbiya. "Without surrender, war is inevitable."

A strike on a car on the Khardali road in south Lebanon killed a man, his son and his daughter, who were students, as he drove them back from university exams in Beirut to the southern border village Qlayaa, where some residents were still holding out despite Israeli evacuation orders.

Theodosia Karam, the daughter, had exams at the Lebanese University in Hadath and left with her father and brother after Israel threatened Beirut's southern suburbs. They drove to their hometown, Qlayaa.

Israel and Hezbollah clashed overnight despite U.S. President Donald Trump's announcement that both sides had agreed to halt fighting ahead of U.S.-hosted talks between Israel and Lebanon on Tuesday.

Israel's growing offensive in Lebanon, including heavy bombardment and its deepest ground invasion in two decades, has threatened to scupper a ceasefire in the wider Middle East war between the United States and Iran.

France's foreign minister said Tuesday that nothing could justify Israeli troops remaining deep inside Lebanon, following the deepest incursion into Lebanese territory in two decades.

Israel and Hezbollah clashed overnight despite U.S. President Donald Trump's announcement that both sides had agreed to halt fighting ahead of U.S.-hosted talks between Israel and Lebanon.