“As far as the war with Georgia, wikipedia isn’t a reliable source.”
Try this: Five Day War, by Charles King, Chair of the Faculty and Professor at GeorgetownUniversity’s Edmund A. Walsh School of Foreign Service
ftp://217.147.227.220/Eurasian%20and%20Caucasus%20Studies%202013-2014%20exam%20reader/14%20King_Five_Day_War.pdf
From my limited understanding of this, much of the world recognizes this region as belonging to Georgia. As far as the reality or historical grievances, I complete ignorance - I have no horse in this race.