Let's see, if Iran foreign policy and belligerent action could unify the GCC and Israel we could be talking IAF taking the fight to Iran proper from Saudi, UAE, Kuwaiti airbase. Israeli F-35s and F-15 fleet would (not merely could) devastate the IRIAF and go for Iran nuclear infrastructure and missile launchers.
The problem with IAF going for Iran nuclear sites has always been the tyranny of distance. They seems to have overcome those but having access to GCC country airbase in the gulf could be a huge help.
London-based Saudi news outlet says drones and mid-air refueling aircraft took part in exercises, managed to avoid Russian and Iranian sensors
www.timesofisrael.com
the combined might of the GCC and Israel is not something Iran could likely cope.