[sofixa]

> Which is why Russia felt cheated for having an independent Ukraine that's not a Russian puppet state as it meant the loss of highly important defense supply chains.

It wasn't a loss until Russia occupied Crimea and the Donbas, before that there was extensive collaboration, even after the fall of Yanukovich. Instead of having the vital supply chains in a non-puppet but relatively friendly neighbor, they cut their own noses off to spite Ukraine and lost access to stuff like marine engines they simply can't replace.