Marc Rich used to smuggle Iranian embargo oil into Israel, and the guy who replaced him in Glencore (Glassenberg) was promoted because he was the guy who figured out how to trade with apartheid SA.
When the rewards are big enough somebody will take the risk and figure out how to it. The only difference now is that these trades are way too toxic for Western commodity traders and so eastern outfits will do it instead.
The world, sadly, still needs all that oil from everywhere, to keep the economy / ship of fools from running aground.
An ideal outcome is Russia sells the oil at a steep discount, has less free cash to buy chips to put in munitions, and the rest of the world has enough oil to keep the general population from rioting in the streets because eggs are too expensive.
The sanctions isolate Russia and make it diplomatically and economically irrelevant. The Kremlin won't have money for soft power projection. Their regional power is already diminishing.
https://www.consilium.europa.eu/en/infographics/impact-sanct...
& welcome to hn, first commenter!