I think you are confusing export with consumption. Russia's fossil fuel production is mostly slated for export, and thus they are very sensitive to the international demand for said fossil fuels. In comparison, US production is mostly slated for internal use, so international demand does not impact the economy as severely.
Yeah (as sibling poster pointed out) I guess that it was more of a distraction point from throwaway. I just read and thought of it in broader terms of oil and gas being super important to any modern civilization.
What you say is true though, short term, but I think I might still rather be in Russia's position in terms of fossil fuels than that of the US, when we look at things long term. What Russia has the option of doing - which is also being discussed elsewhere in this thread - is using those resources domestically, to grow/develop its own industries and (currently dwindling) population. In fact that's what they're being pushed to do by the sanctions (as they have been developing their agriculture as a response to previous sanctions). I've been really really skeptic of the sanctions (to put it mildly) since the beginning. They will always find ways to sell their resources (if they want to).
Even though the sanctions are imperfect, they still have a very real effect. At an absolute minimum, it vastly increases the overhead of the sanctioned country to sell it's oil, and those who do work around sanctions can demand and get a large discount, thus reducing revenues. Even more effective are the supply-side sanctions, and the Russian auto and air transportation industries are already seeing serious effects, which will only get worse.
The argument by throwaway71271's is pointless and made only as a distraction from the initial point that Russia is a petro-state heavily dependent on oil export - without those EXPORT revenues the entire state is at serious risk of collapse.
Obviously EVERY economy has many critical components that are yet a small percentage of the overall economy; your mention of food is an excellent example. These are not the question here.
The only relevant point is that the USA is not even close to dependent on it's exports of oil and gas. In fact, NatGas exports were entirely banned until recently. If all USA oil & NatGas activities were suddenly done on a nonprofit basis at cost, the economy would only shrink marginally. If Russia did the same thing, it would likely collapse on a timescale of single-digit months.
