“Does Libya have a nuclear weapons program?” — Ghaddafi started it, with Paki help, but abandoned it as it wasn’t worth getting invaded (that still happened, thanks to Obama and hellary)
“Does Saudi Arabia?” - yes, it’s called the Pakistani nuclear establishment. By all accounts the Sauds paid for it and have it “on call” when they want it
“Does Iran...” - nope, but that’s not for lack of know-how. The Pakis shared the technology with them, not the fissible material - that’s what the centrifuges were built for.
I’ve not seen it conclusively revealed that Saudi Arabia has nuclear weapons. Are you sure about that?
Why did Ghaddafi relinquish his nuclear weapons program?
Do you recall?
He got very nervous when we invaded Iraq the second time.
Barring that he may have pushed his program ahead.