Seeing rumblings that Israel used intel from Ukraine that showed big flaws in Russian Air Defense systems in its attack on Iran.
Word is they used F35s and easily flew around taking out Iran’s entire air defense network in 30 mins.

If true, thats gotta be a killer ad for the F35 (and unsettling as **** for anyone relying on Russia’s vaunted air defense systems).
Some foreshadowing on this exact scenario from August here:
Any imminent or ongoing delivery of advanced Russian military hardware to Iran now could prove risky for Moscow.
www.forbes.com
If the F35 is indeed invisible to S300/S400 class systems… thats a major major issue for the red team.