The Iranian government is working hard to root out the Mossad cells that are conducting drone/ATGM attacks in Iran. Multiple arrests have been made and more are on the way.
Israel is selling several on the ground drone attacks as air strikes to sell the idea that they can penetrate Iranian airspace with impunity. This seems to not be the case and the Israeli airforce appears to continue carrying only standoff strikes from Syrian and Iraqi airspace.
According to an Iranian analyst, the majority of their missiles are stored in facilities deeper into the eastern half of Iran, so a bit outside the bombing range of F-35s, forcing long flight paths through hostile territory in order to get to these targets.
A lot of the mosad spy cells have Indian migrant workers, there are around 10,000 Indians there, mostly in the big (target) cities.
I think the Israelis must have a clever secret hack which is allowing them to get to the top officials, something along the lines of the beeper stratagem, for instance tiny RFID chips in their uniforms or imbedded in their military insignia, badges, it could be anything really. We might find out down the line.
Pakistan did intervene directly in the last Israeli-Arab war in '73, on the Arab side with their Mirage V squadrons, as did the US and France with F-4s and Mirage IIICs on the Israeli side in the later stages of that war where Israel lost a relatively large number of F-4s and Mirages mostly to AA Sam missiles. So there is a precedent there, Pakistan could easily defend the eastern quarter or third of Iran with their Chinese J-10 armed with PL-15s which vastly outrange Israeli F-15/F-16/F35s armed with AIM 120s.
The Pakistani military leadership tend to be their cultural elite, descendents of the Moghul military elite that ruled the Subcontinent before the British took over. They are a bit more like Turks in that they have a cultural legacy that makes them less subservient than other Muslims like Egyptians or Moroccans.
The Israelis have a Jewish Persian population from which they draw their intelligence operatives and analysts, they have cultivated a large cell with hundreds of native-level Farsi speaker operatives, however they don't have much of a footprint in Pakistan. As Nixon once said, they really are a natural spy population, with hundreds of thousands of
sayanims, or civilians who perform secret work and services for Israeli intelligence.