G7 foreign ministers agreed on "the need to avoid a security void" in Lebanon after UN peacekeepers pull out, French Foreign Minister Jean-Noel Barrot said on Tuesday after a meeting of the group in Paris.
They also backed "the need to move quickly toward a new security architecture" after the mandate of United Nations peacekeeping forces in Israel's neighbour expires at the end of the year, he said.
But Barrot acknowledged there had been no breakthrough on what should replace the United Nations Interim Force in Lebanon (UNIFIL), which has been in place since 1978 and now counts some 7,500 personnel from nearly 50 countries.
Under US pressure, the UN Security Council voted last year to end UNIFIL's mandate on December 31, 2026.
EU foreign policy chief Kaja Kallas told AFP in October that the bloc favoured a UN peacekeeping mandate in south Lebanon.
Lebanese militant group Hezbollah drew the country into the broader Middle East war by attacking Israel, which responded with massive airstrikes and a ground invasion that Lebanon says have killed more than 4,300 people.
"I am hopeful that we will reach a consensus," said Barrot.
