Beside the US, who in NATO has a military that could fight a major war? And we want to commit ourselves to defending states landlocked in Eurasia against Russia? If Georgia was in NATO, we still could not have done anything. Most of the European Union would just have bailed.
We need to make the EU take a serious interest in its own defense. We can not patrol the world. No nation that has ever tried that ended well.
If they decided to do so, Germany, Italy, and Spain could also. Of those, perhaps Italy and Germany would at this time.
I expect the Ukraine would too as soon as they were a member.
As to protecting Gerogia...1st of all it is not land locked. Second of all, it borders Turkey who has a vested interest in Russia not expanding to its own border and who has a strong military.
I believe Georgia and the Ukraine should become members of NATO and hope they do.