This isn't 1563, there should be resistance and consequence from one nation invading another sovereign nation. No, I do not think we should just sit back and just sanction Russia. There are several reasons why sanctions mean absolutely nothing. First, the sanctions only hurt the citizens of Russia, and the western businesses that rely on the Russian people. The sanctions do absolutely nothing to harm or deter the Russian government or military. Russia isn't a democracy, what does Putin give a crap if the children of Novograd are starving and cold because we aren't providing them corn and coats? Secondly, China won't sanction them. Russia with continued support from China will be economically just fine.
If you support sanctions only you're better off just letting them invade without giving a crap.
We need to, with a coalition of forces across, Europe, provide armed resistance. If we can't build a coalition, and by that I don't mean 90% American troops with England, France, and particularly Germany, Czechia, and Poland throwing a couple of soldiers in. We would need to provide SUPPORT. If the countries that border Ukraine can't be bothered, then why should we. Whatever we do I am very much anti-sanctions.
I also firmly believe that if there was a war over Ukrainian sovereignty, that this absolutely would not be WW3. Who is fighting with Russia in this scenario? I certainly don't think China will fight a war with Russia on a different continent. What do they have to gain by that?
On a personal note, I have a couple of people close to me who are Ukrainian, currently living in the Ukraine or Poland and because of this I certainly care more than I would if this was Tajikistan. My view that no country should take another sovereign nation by force still applies, but I would care a lot less.