You can't play all your chips in one hand. If these sleeper agents exist, I imagine they are something you would want to reserve for only the most essential -- like to find out if Saudi has nukes, or to provide disinformation/sabotage during a major war.
I don't think Israel's problem is one of military strength or intelligence. I think their problem is that they are being heavily pressured to be measured in their responses.
Apparently so. Following each new terrorist outrage in Israel, it seems the US government leads the "chorus" of "world community" voices in demanding that Israel exercise restraint. I believe this policy of demanding restraint on the part of our allies who have been sinned against originates from the state dept and Colin Powell. It then gets pushed in front of GWB who seems to blindly and without much thought buy in.
The conclusion is almost inescapeable...and has been for years...that the state dept does not want peace in the mid-east. They cannot possibly be as stupid as they appear...even coming from the Ivy League.
Timidity in the persuit of terrorist perps is no virtue.