From the website of the U.S. Embassy in Beirut (follow the link if you doubt me):
A message to the American citizens in Lebanon:
The Department of State continues to work with the Department of Defense on a plan to help American citizens depart Lebanon. As of the morning of July 15, we are looking at how we might transport Americans to Cyprus. Once in Cyprus, Americans can then board commercial aircraft for onward travel. Commercial airlines provide the safest and most efficient repatriation options to final destinations.
The Department of State reminds American citizens that the U.S. government does not provide no-cost transportation but does have the authority to provide repatriation loans to those in financial need. For the portion of your trip directly handled by the U.S. Government we will ask you to sign a promissory note and we will bill you at a later date. In a subsequent message, when we have specific details about the transporation arrangments, we will inform you about the costs you will incur.
By the way, here’s what it says at the website for the Canadian Embassy in Lebanon:
The Canadian Government has arranged for sea vessels to assist Canadians wishing to depart Lebanon. All costs related to the evacuation of Canadians citizens from Lebanon will be borne by the Government of Canada.
UPDATE: More to this story here.