Both countries are active state-sponsors of terrorism.
Sad but true.
I agree. But I think Iran leads the way.
Iran has the potential to create more damage because of its missiles and its approaching nuclear capability.
However, in contrast , Saudi Arabia always has been the financier of dangerous Wahhabi terrorists cells, which have such an immense impact in the world.
That's why I say both are a problem.
oil money does not last forever-----relatively speaking---Saudi Arabia is a LESSER country than is Iran. The best that can be said for the survival of Saudi Arabia is---
it is SUNNI------whereas Iran's ARMY is the Shiites all around the world-----the Shiites are out numbered.