"The United States says there are about 25,000 US citizens in Lebanon.
US security teams have landed at the US Embassy in Beirut to start planning the evacuation of Americans.
It has been working on a contingency plan to transport them to Cyprus.
So far about 20 Americans, including non-essential embassy staff and people with medical needs have been flown out of the country by helicopter.
France, which has 20,000 citizens in the country, has chartered a ferry to Lebanon, due to take its first passengers on Monday morning.
Helicopters, landing craft and a mobile hospital would be also available.
Australia, which has around 25,000 citizens living in Lebanon, is drawing up an evacuation plan.
Prime Minister John Howard said the government was doing "everything they can" to arrange a plan for Australians trapped in the country.
The Canadian Foreign Affairs Minister, Peter Mackay, has said the government is putting commercial ships in place to evacuate some of its 16,000 citizens by sea.
Italy has sent a convoy of about 400 citizens from Beirut towards Syria from where Italian military flew them to Cyprus.
Rome is also sending a naval ship and two C130 transport aircraft. It has 1,000 citizens in Lebanon.
Germany has not announced specific plans to evacuate its 1,100 nationals.
The foreign ministry has advised citizens not to travel to Lebanon and told nationals already in Beirut to seek shelter in safer areas.
However there are reports that around 100 Germans have left Lebanon for Syria in several convoys carrying citizens from a number of EU nations.
Poland has said around 150 of its nationals would leave Beirut for the Syrian border in a convoy of buses, due to leave on Tuesday morning.
The Romanian president has called an emergency cabinet meeting to discuss evacuation plans for the estimated 1,000 nationals living in Lebanon.
More than 100 Romanians are already reported to have left through Syria.
Greece said a warship would leave for Lebanon on Sunday night, to return 100 Greeks who had asked to be evacuated.
Earlier, an Olympic Airlines plane took 50 Greeks from Lebanon to Athens via Damascus.
Around 50 Brazilian tourists and workers are believed to be travelling by bus to Adana in Turkey, where an airforce plane is expected to pick them up and fly them home.
Spain, which has already flown around 126 nationals to Madrid, is said to be planning a second operation to fly out more of its 600 citizens in Lebanon.
Austrian nationals were evacuated by bus from Lebanon to Syria on Sunday, along with other Europeans. There are an estimated 120 Austrians living in Lebanon.
Turkey said 32 of its nationals have crossed the Turkish/Syrian border by bus.
Morocco is evacuating several dozen nationals on C130 transport planes.
The governments of 1,600 Ukrainians, 500 Bulgarians, 2,000 Swedes and 600 Dutch are also making contingency plans for those who wish to leave.
The United Arab Emirates is sending six aircraft to bring home citizens who have fled to Syria"
http://news.bbc.co.uk/2/hi/middle_east/5184134.stm