I see from Mark's blog that the IDF cowers at the military might of the PFJ. Which reminds me, there is a bit of errata need to the Rock the Casbah supplement.
On page 17 under the PLO factions/militias the following needs to be added (at least for this project). People's Front of Judea - A radical anti-Western (Roman) group that is small (offically I believe five members) and appears to be against (hates) everybody in the PLO movement. Reference
The PFJ has one force trained and ready to do combat with a second force in training.
All one needs to do is look at our firepower to understand that the IDF is no threat to the PFJ.