the question is if those countries will have strong commitment to invest into significant and non-trivial infrastructure rebuild, or it will be just speeches from politicians.
> Russia takes over all of Ukraine
I don't think this was ever goal of Russia. I think they wanted to occupy some southern and eastern regions, force Ukraine to recognize Russian Crimea and set some puppet government in Kyiv.
I believe Ukraine and Russia will reach some agreement soon, Ukraine will likely lose some territory and political independence, and in 3 years Europeans will mostly forget about this stuff, will be destructed by other issues and continue buying Russian oil and gas.
That's what I meant by taking over all of Ukraine. If Russia sets up a puppet government, then I expect further sanctions. Maybe they won't if a settlement is reached with the current government.
Is it just China? EU also will continue buying gas, and prices are much higher now than year ago.