You're underestimating Russian capabilities a lot if you think they are scrambling to substitute parts for missiles and that they have no knowledge-expertise fo

You're underestimating Russian capabilities a lot if you think they are scrambling to substitute parts for missiles and that they have no knowledge-expertise for control systems. A lot of people seem to think that Russia is still stuck in the malaise years of post-soviet Yeltsin administration, when in fact, this couldn't be further from the truth. There are several fields where Russia is far ahead of the west, like AD a EW. In fact, the F-35 design was centered on stealth to the detriment of range and payload specifically to be able to counter the threat of Soviet SAMs. Of course, a lot of their civilian manufacture depended on cheaper, less power hungry and more advanced western chips. Also, for ground applications, simulation and design tasks we can be pretty sure that they use western technology and now are having to resort to smuggling. But for the guts of weapon systems? Radars and Military Glonass systems? Very unlikely that they depend on western chips for that.