Apparently, Israeli F-35s overflew Iranian cities and bases undetected, including some of their most sensitive weapons development sites, and their new air defense complexes.
Iran did not detect their entry into their country, or their exit from it.
"According to the newspaper's investigation, "the IAF F-35 "Adir" planes penetrated Iran's airspace, circled high above Tehran, Karajrak, Isfahan, Shiraz and Bandar Abbas – and photographed Iran's air defense system."
One of the sources reported that Iran's air defense system, including its Russian radar, did not detect the entry and exit of the fighter planes, and that Ismaili hid this information from the supreme leader to cover his service failure. However Iranian intelligence discovered that the Israeli fighter jets had carried out this sortie as a test of the possibility of an undetected attack on Iranian outposts and bases, during which they photographed those sensitive bases, evading the Russian S-300 missile system's radar.
According to Al Jarida, Iranian intelligence received top secret information that the Israeli fighter planes even managed to photograph Iran's underground bases. Khamenei, who received this information, now suspects a cooperation between Russia and Israel, and that the Russians gave Israel the secret code of the Russian radar in Iran – according to the Kuwaiti newspaper".
I suspect the intelligence gathered from these sorties might become very useful if Iran continues to process uranium enrichment at an accelerated pace.
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This might make for an interesting gaming scenario, with each F-35 having a very slim chance of being detected by the Iranians, and if so, then trying to get out of the country, as faster, and more maneuverable Iranian aircraft try to intercede to stop them.
I'd suggest using 1/600th scale minis for a game like this, so you have lots of maneuvering room on the tabletop, and can even scratch-build some industrial complexes to seek out.