>See this fascinating article about Western CNCs used in the production of Iskander missiles

Pretty much all Russian factories run on US/Europe equipment. It's not really a secret, not sure what's surprising about that.

>Think also secondary sanctions, i.e. sanctions against countries and organizations that help circumvent sanctions. For example, companies in, say, China or Uzbekistan profiteer by selling to Russian companies components bought from the West. Let’s make them face a dilemma: if you do business with Russia or NK you will be cut off from the West.

You'll have to sanction dozen of countries then. It's not really practical.

If west really wants to deal a blow to Russia then they need to make oil super cheap somehow, that would stop Russia really fast. Unfortunately that will never happen too...