Those weapon makers such as Lockheed Martin have been racking in the Giga Bucks for a long time now even without the middle east sales. Now with the increased tempo of the war drums between these 2 sponsors of Islamic terror I'd say let loose the dogs of war. However my SOLE concerns is the inevitable increase in the price of oil.
I was surprised; If you browse the vid in post #64, apparently the Iranian air force is embarrassingly obsolete relative to the Saudis. This, plus apprehension about an Israeli preemptive strike may be why they have made such a big deal out of getting such advanced anti-aircraft hardware from the Russians. Maybe the Russians just want to sell the latest most expensive gear. Or both.
I can’t tell you I have any good notion of how such a war would unfold. I tend to doubt it would be directly between KSA & the Iranians. Both those parties like to engage in proxy wars and they may just ramp up what they already have going 2 or 3 levels. And then...?