@ThreeLetterAgency I haven't read about the subject in awhile but I'll check it out what you posted tonight hopefully.
One thing I do remember is that Al-Qaeda was given sanctuary at times in Iran and they also protected Osama's immediate family.
That couldn't have been done without government sponsorship.
As far as the op goes a lot of Saudis are connected to the government/welfare state but it doesn't always mean they're functioning as proxies for their government.
I don't think there was ever a debate over whether they were Saudis by nationality it wasn't necessary.
As far as people saying Iran that isn't responsible for state sponsored terror, the premise is laughable, and you're clearly uninformed about the subject.