I was last in Tel Aviv 2 years ago meeting a cargo aircraft I was due to fly out on as a crew member. On arrival the authorities obviously aware of the difficulties an Israeli stamp in my passport could cause, actually gave me the option of not having the stamp if I didn't want it. I opted not to have the stamp and in the event my flight was cancelled and I returned to UK as SLF on BA. I had absolutely no problems departing Tel Aviv without an entry stamp in my passport.