I don't see how you can compare Vietnam to Israel. The US was never under any similar type of threat Israel is still under. The US was naive at the start as they believed it would be easy and quick to squash the Viet Cong. All that the press did was to save the lives of American soldiers. They did not save the Republic which is not quite the same thing as a Democracy. Israel is a Democracy which does not have many tools to defend itself in a neighborhood of dictators and terrorist groups. This point is not understood by many on the Left who are willing to see the Jewish state commit suicide with its hands tied behind its back.
Syrian group says Nusra abducts its leader, in blow to U.S. plan (Reuters)
from the article: Haaretz answers four key questions on the Anat Kam case