Ukraine

No, I don't think I am, especially not with respect to Taiwan's relative importance to US security. In addition, if Russia does control Ukrainian resources one day, they're certainly not going to "use them to strangle the world economy". They are and will continue to be absolutely desperate for foreign capital...to fund rearmament for another push into eastern Europe in 5-10 years, if nothing else.

Keep in mind, I'm not advocating letting Ukraine go it alone in the slightest. I agree that entry of North Korean troops should elicit a move to take the gloves off of Ukraine to strike anywhere in Russia with everything they have at their disposal. I'm simply of the mind that such an entry should not trigger the active involvement of NATO ground troops (or certainly not American men and women) into the front lines of Ukraine.
You must have missed the lithium mines and contract to supply all of Europe's transformation from ICE to battery vehicle.

https://www.electrive.com/2021/11/08/european-lithium-secures-ukranian-lithium-deposits/
Australian mining company European Lithium is in the process of securing two promising lithium deposits in Ukraine, aiming to become the largest lithium supplier in Europe and an essential part of an integrated European battery supply chain.

The two deposits, discovered and subsequently explored in the 1980s and 1990s, are located in Shevchenkivske in the Donetsk region and in Dobra in the Kirovograd region of western Ukraine. Both sites are said to be “under-explored” according to modern methods and “contain significant expected resources”, according to a statement by the Australian company, who have so far made a name for themselves in Europe mainly as the owner and operator of a lithium mining project in Wolfsberg in Carinthia, Austria. A “phased acquisition” of the two deposits has now been agreed, with the transaction expected to close in November 2022.

Beyond that titanium and beryllium are both major military strategic resources found in Ukraine.