The foreign ministers of France and three other countries seen as potential contributors to an expanded United Nations force in southern Lebanon are holding talks in Beirut about the nature of the mission.
The UN wants to boost the current 2,000-strong force to 15,000 with the first troops deployed in two weeks.
The UN Secretary General, Kofi Annan, is to meet the Israeli Foreign Minister, Tzipi Livni, later today.
Meanwhile, tens of thousands of refugees are continuing to return home to south Lebanon despite warnings that it is too dangerous.
Israel said the area remains unsafe until the Lebanese army and UN forces are deployed there.
The UN has also warned of the danger of unexploded ordnance.
International relief organisations are trying to deliver badly needed food and medicine to the area.
Simon Schorno of the International Committee of the Red Cross has said security was a concern south of the Litani River, where the Lebanese army is expected to begin its deployment on Thursday.
Israel may complete withdrawal in 10 days
Meanwhile, Israel has said its troops could complete a withdrawal from south Lebanon in seven to ten days.
In a separate development, the Israeli army said it had killed a senior Hezbollah commander just hours before the ceasefire came into effect on Monday.
An army spokesman named the dead man as Sajed Dawayer.
He would not say why the army delayed in releasing the information.
