I don't know how useful it will be as a case study since an HA/Ops person in (let's say, the US, Canada, AU, western european countries) has access to do things like buy hypervisor capacity or colocation in just about any location. I could go buy colo in Brussels or Panama City or San Diego or Edmonton or Melbourne tomorrow by contacting the right people.

The Russians are much more restricted from doing anything geographically outside of their own borders (for very well justified sanctions reasons), so their limitations are not the same as an HA person in almost any other country. Maybe some Iranian HA/Ops people will be comparing notes with them.

I think the complete destruction of the AWS Bahrain region got there first.

I don't think there is much you can do about being targeted by a military, simply because of how unique the attack vector is.

Hacking is smart but happens through software, so if you have hardware (i.e. physical) barriers, that stops the hacking.

Natural disasters happen physically but they are dumb, so if you have software redundancy (i.e. by copying the data to multiple locations), that stops them from destroying everything.

A military is both physical AND smart. They can target multiple locations at once and destroy whole buildings.

I feel like this isn't even a particularly new thing. I worked at a medium-sized SaaS company and we did disaster recovery drills for moving our stack from eu-west-1 to eu-central-1 in case something catastrophic happened in Ireland. If you want HA, you kinda have to assume that any single country in the world can have some kind of a crippling disaster. Unfortunately for Yandex's clients, Yandex only has regions in two countries, and not that many regions either.