This waening probably has something to do with the arrest of 15 alleged members of Al Qaeda. Which is a bit more original than the intelligence about HAMAS planning to kidnap Israelis which was the last 'intelligence assessment' This is more about keeping Israelis in Israel so their money can be taxed than with any real security threat. Go on holiday get away from the religious whackjobs for a few days.
Suspect Bangkok bomber arrested, found with possible bomb-making materials (Reuters)
from the article: Israel issues severe travel warning: Al-Qaida may attack in Sinai