I think there's a lesson we should have learned from 9/11. Sadly I haven't heard anyone mention it anywhere.
https://billhulet.substack.com/p/practical-forgiveness-a-hot-take
The USA never attacked Saudi Arabia after 9/11. Instead, they attacked Iraq which seemed to have nothing at all to do with 9/11. So, I don't get your point.
Besides, the average citizen of Saudi Arabia, Afghanistan, and Iraq didn't have anything to do with the attack either. Yet hundreds of thousands were killed. That's like being a hired hand or slave on a Norse farm and being killed or dragooned into killing someone else just because your chief got dissed by another chief. That's why we need to approach terrorism as a criminal justice issue instead of being a 'war' between different states.