How does Russia gets its chip for its weapons and other tech? Do they use in-house built but poor quality chips? Or they too buy from TSMC or the like?
Currently at 65 nm, good enough to manufacture chips like these: https://en.wikipedia.org/wiki/Elbrus-2S%2B
Russia still depends on TSMC for chips at 28nm like these though: https://en.wikipedia.org/wiki/Elbrus-8S
In comparison, here's BAE's RAD750 at 150 nm: https://en.wikipedia.org/wiki/RAD750
65 nm is plenty good enough for rad-hardened military equipment, though good server chips still have to be outsourced to TSMC.
In comparison, China's SMIC is at 28 nm CMOS and ramping up 14 nm FinFET processes but it depends on foreign companies for lithography machines. China's SMEE has a 90 nm lithography machine and announced that they're delivering a 28 nm machine sometime next year. I can't seem to find any Russian lithography companies though.
Also there is a big segment of small chips (e.g. RFID) for which a bigger process is cheaper. IIRC most of public transport tickets and cards in Russia are produced locally.