That is so fascinating, if you are good at cyber attacks (that comes up *again*) you actually want all your allies to be really stressed out since they tend to do more impactful stuff. I never would have thought about that. Also, I am pretty sure that combined war really should have been one single war. Not for any rules reason, it just seems kind of silly to set up and immediately conclude two wars in a row.
I concluded it was separate due to how other dice rolls would have been individual wars against just one of the two. But after checking BGG, they said it is based on the conflict tracks. So Israel IRAN would be one war. Israel/Neighbors is another. And all neighbors would combine together.