Ukraine: 1/4 Russia population 1/8 Russia GDPNah, Georgia was far weaker - Iraq still had a relatively large military despite being drained from the war with Iran. I'd say Ukraine is a closer comparison to Iraq, maybe slightly stronger (relative to Russia-Ukraine, not in absolute terms) but they are definitely nowhere as strong as Imperial Japan was at that time, lol. Imperial Japan was short on resources and overstretched on multiple fronts, which led to its downfall.
Imperial Japan: 1/2 US population 1/5 US GDP
So a bit weaker than Imperial Japan but not by much