On the one hand:

SHOOT THEM THE FUCK DOWN IF THEY VIOLATE YOUR AIRSPACE (assuming you detect them at the time and have the capability)

On the other hand:

I bet Israel is counting on that so they can let everyone know they have evidence that IRAQ is actually HAMAS while they start bombing hospitals and schools.

I don't blame them for NOT shooting the fucks down. Rock and an explosive place backed by a global superpower...