Switzerland announced Friday that planned talks on implementing a U.S.-Iran memorandum of understanding to end the Middle East war had been postponed, hours after U.S. Vice President JD Vance's departure for the Alpine country was cancelled.

"The planned talks between the U.S., Iran, Qatar and Pakistan have been postponed," the Swiss foreign ministry said in a message to AFP.

Far-right Israeli National Security Minister Itamar Ben Gvir said Friday that "all of Lebanon must burn" after Israel's military announced the deaths of four soldiers there.

"With all due respect to the Americans, Israel must make it clear to the entire world that the blood of our sons and the security of our citizens are not up for bargaining. All of Lebanon must burn," Ben Gvir said in a statement.

France on Friday urged Israel to "respect" a deal signed between the United States and Iran to end the Middle East war, the French foreign minister said after overnight Israeli strikes in southern Lebanon.

"This agreement provides for a cessation of hostilities, the Israeli government must respect it, and the United States in particular must exert all the necessary pressure on the Israeli government to ensure that this is the case," Jean-Noel Barrot said on FranceInfo radio.

Israel said Friday four of its soldiers were killed in south Lebanon amid clashes with Hezbollah.

Lieutenant Colonel Dor Gedalia Ben Simhon "fell in combat" along with three other soldiers whose names will be released later, the military said in a statement.

Israeli airstrikes killed 16 people overnight in the Nabatieh region of southern Lebanon, state media reported Friday, despite a peace deal in the Middle East war that includes Lebanon.

Lebanon's National News Agency said "the enemy committed several massacres" with a series of airstrikes after midnight that targeted residential areas in several towns, including Harouf, where at least eight people were killed.

Lebanese authorities have arrested a citizen suspected of having imported parts used to manufacture Hezbollah drones, a judicial source told AFP on Thursday.

Hezbollah has been using fiber optic drones, which are resistant to jamming, in their fight against Israel since early March.

The head of Hezbollah's parliamentary bloc, Mohammad Raad, said on Thursday that Israel's war in Lebanon had "failed" to eliminate the Iran-backed group.

Raad said in a statement that "the enemy's war aimed at crushing the resistance in Lebanon has failed and will not achieve its objectives".

Hezbollah said its fighters were engaged in fresh clashes with the Israeli military on Thursday, hours after Lebanese state media reported that Israeli strikes in the south killed three people.

The fighting came a day after the United States and Iran signed an agreement to end the Middle East war on all fronts, including in Lebanon.

Israel's Prime Minister Benjamin Netanyahu underscored the importance of maintaining close ties with the United States on Thursday, saying Washington had stood by its ally during the Middle East war.

"The struggle is not yet over, and further challenges lie ahead. They require calm judgement, steadfast defense of Israel's security interests, and at the same time the preservation of our vital relationship with our American friends, who stood shoulder to shoulder with us in this fight -- a partnership we deeply appreciate," Netanyahu said at a function, according to a statement issued by his office.

The Israeli military said on Thursday it will continue operating in southern Lebanon and "remove threats" beyond its so-called security zone, after the U.S. and Iran signed an agreement to end the Middle East war, including in Lebanon.

The military published a map of its declared "security zone" -- which runs some 10 kilometers inside Lebanese territory.