Could it be that the IDF and Shin Bet have been thoroughly infiltrated by these groups. I find it very difficult to accept that a price tag operation against an IDF facility was carried out by outsiders. Those people that carried this out entered an IDF base, sabotaged a dozen military vehicles and then escaped undetected. Is the Israeli military that vulnerable to outside attack? Not very likely. If we believe 10% of the stories about the prowess of the IDF, it seems unreasonable to accept that any outside group could penetrate their security like this. It has all of the earmarks of an inside job. Face facts dear citizens of Israel -- the settlers have infiltrated your security forces.
Islamist group claims attack on Friday's attack on UN base in Mali (Reuters)
from the article: Shin Bet: Israel's extreme rightists organizing into terror groups