Where have those rules of diplomacy gotten Israel thusfar? Concession after concession after concession, that's where. The only rule I think Israel should follow is to ensure the safety of diplomats. Other than that, tell them like it is. The language of half-truths and appeasement is tearing world governments apart and setting many of them on a course to disolution.
World Jewish Congress: Nazi train treasures must go to rightful owners (Reuters)
from the article: French, Spanish FMs: Lieberman violated every rule of diplomacy