SO, US fighting Russia from the shadow , you want to say?
On serious note, Russia is a resource producer not a consumer, neither its 16th century that EU can anymore steal others' resources like East India Co. could steal 45+ Trillion $ worth from Bharata by deploying divide and rule and deception on the tip of musket, and it's still surviving on that loot's dividend.
And for cracking Russian economy, that dream seems to be far far fetched. At least till it has direct trade continuing with China and India. West can't even scoure Titanium if Russia denies its export ( That's why the race is going on to get own hand on Ukrainian mine instead)
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Sadly, except the Long range missiles, nothing much game changerS left to surprise Russia..And, Can't say for NAFO, but, US won't set foot physically for direct combat on ukrainian soil, that's for sure.