maybe they have some special secret recipe burger sauce that gets shipped in from america? but the core ingredients (beef bread vegetables potatoes etc) are all locally sourced i think. if the russian state decided to expropriate mcdonalds russian operation and spin it off into an independent russian company, it would probably work. whether it would remain profitable under that new management is a different question, but in principle it's feasible. it's not like electronics manufacturing where you literally can't operate if tsmc refuses to let you buy their chips.