> is a capable of encircling the defenses of mid sized European states within days
...after mobilizing their forces to three sides of its border very visibly for several months. The US government first called this out in early December of 2021, and satellite imagery showed they were staging battalions and vehicles at least as far back as late November 2021.
It's not like Putin decided "Hey everyone, I decided to invade Ukraine make it happen" and the next day hordes of troops and vehicles streamed out of Moscow and drove straight into Ukraine.
It’s not as if Russia has no power, no population, no resources, and no economy simply because a few sanctions were placed on it.
Plus, Russia put into place hard restrictions on exchanging currency keeping the value from plummeting out of mere panic.