This is going to hurt Putin. Pretty much screws his economy completely. Russia's foreign reserves will be frozen, no one will trade the ruble, the oligarch's will have their assets frozen.
It might come down to whether he gets assassinated before or after he launches a nuke. China won't help. They would much prefer not to have madman with nukes as a neighbour. I guess Cuba, Iran and Myanmar can loan Putin some money.
Its actually resulting in a worsening situation for him vs NATO also.
More NATO troops will be permanently based in countries that border Russia going forwards.
There has also been growing sentiment in Ukraine since the annexure of Crimea whereby there has been a massive swing in the proportion of Ukrainians that want to enter NATO. This will only increase after this invasion.
This whole situation may well leave Russia in a seemingly worse position against the West and NATO which again questions whether that purpose of this attack was actually the truth or more lies and deception from Putin.