If Russia succeeds in choking EU with their gas and US: with oil, they'll set a precedent for China.
I don't think that's going to happen. Countries like Germany are going to learn the hard way that they shouldn't single source their energy sources to fascist regimes. Russia did have a pattern of invading other countries: Yelstin had to increase his popularity in 1998, so they trumped up Chechnya for that. Though the first invasion didn't go so well. Then there was Georgia with some BS dispute. It appears Russia has bitten off more than it can chew with Ukraine. Let's hope the West doesn't get war fatigue. There is too much misinformation on both sides, and I get all the propaganda from my wife's family in Russia (Belgorod to be specific, right across the border from Kharkiv).
On February 23, the day before the Russian invasion, the price of oil per barrel was $92.10 (per
Oil Price Charts | Oilprice.com). Yet on July 12th, it was $95.84. These are things that make me go hmmmm. I don't want to say there is price gouging by the oil companies, but there certainly is price gouging by the oil companies.
The real issue for winter is natural gas. We will see how shipping from Israel, the US, and the Gulf can offset the easy distribution through pipelines.
Given how poorly the Russian army has historically performed, how they have unified NATO, if the sanctions continue, it is going to affect Russia for years. Sure, they are able to find other sources to sell their oil and natural gas, but it isn't as profitable, and they cannot get the computer chips needed for their high end weaponry. China cannot supply that yet, and yes, China is hard at work to make themselves self sufficient. Invading Taiwan affects the global economy far more than the invasion of Ukraine. For Ukraine, it is the undeveloped world that suffers the most. The developed world isn't going to stick their necks out for them. That's the reality.