Do you think Russia trusts Iran with nukes? I don't. Not at all. And even if they kinda sorta wanted to, it isn't in Russia's interest. Let's see why...
Sure, I bet there are methods to somewhat determine the condition of Fordo with on the ground intelligence, maybe even ISR assets. We'll never get to...
No radiation per IAEA is ambiguous in terms of BDA. Again, UF6 is heavy and highly reactive with any water which yields UO2F2 which is super soluble...