[Pistias]

If I recall, there's an Arabic word that expresses the concept, but I don't remember it (fayyiq?)--not that Arabic culture condones lying (in fact, it deplores it); but lying to infidel is an acceptable breach of the duty to keep faith...sort of like lying to an axe murderer about where his intended victim went.

[agrace]

You're absolutely correct, Pistias, it's an Islamic doctrine/practice called taqiyya. Do a google search, choco taco.