I think you are confusing two separate things. One is a nuclear capable Iran and the other is about the military projection of conventional weapons. Both are troubling but one is more acute than the other.
The monitoring of Iran's nuclear program was working.
I wish they did. There is serious need for some MAD in the area, especially with regards to Israel, that is way too happy to project its own overwhelming power with complete disregard for the legitimate interests of its neighbors.
To be clear: I don't wish Israel harmed or victim of any attack. I wish it contained by a matching power. Which is exactly what Israel doesn't want, and the reason for its pressuring the US to attack Iran or strangle it with sanctions.
Its main focus is to talk about Stuxnet, but it goes into quite some details to put that attack into context. Under the deal that the US pulled out of, IAEA (International Atomic Energy Agency) had the authority to walk into any space in Iran under any suspicion that they might be building a nuclear bomb there, overwriting any local law that might prohibit them from doing so. That deal is still in place, because other seven signatories weren't stupid enough to pull out of that agreement (including Iran).
You mean like Israel?
Pointing nuclear weapons at a nation that has had those nuclear weapons pointed at them for years seems only fair to me.
whether they are conventional or not is determined by their payload; eg, scuds loaded with HE are conventional ballistic missiles