[throwaway4aday]

I don't think many lessons about a potential world war could be gleaned from Ukraine. A world war is going to necessarily pull in all of the major powers which means that there won't be a single front, navy and air force will be involved and strikes deep into territory on all sides will happen via missile, bombers, and drones. In short, it would be chaotic and fast moving with destruction happening everywhere. The involvement of satellites is terrifying since they would be a prime target and would likely be one of the first major casualties.

[pjscott]

There are over 3000 satellites in the Starlink network alone. How many anti-satellite missiles are there? Would taking out all those satellites be worth the cost?

[Dah00n]

After a few the rest would likely go down by debris. Not that it would matter as a world war would already have caused so much debris from destroyed satellites that nothing up there would work anyway.

[datameta]

Kessler Syndrome prevention pacts would function similarly to MAD policies, I imagine.