Also we can add here South Osetia. It is a "country" of 1 town and 5 villages (50k population total) without army and industry. De-facto today it has the same status as Northern Osetia inside Russia so I will not be surprised they will simply unite one day.

Abkhazia is more real country (300k population). They have sea coast (tourism), a bit of industry, local army and normal government. I'd say it is analog of Puerto-Rico by its status. Doesn't differ much from Caucasian Republics of Russia. Local population isn't conscripted into Russian Army but in Russia population from the Caucasus isn't conscripted too because of ethnic problems.

They both use Russian currency. 90% of population has second Russian citizenship. Russian military bases are there and the Federal Border Service (of Russia) keeps their border. (No border with Russia)