Group of Twenty-Fives

Baltic Union is an intergalactic powerful republic, and one of 28 superstates that played the role of order protectors during the first 2 stages of the New Age.

This nation is one of many typical examples, in which a group of small & less important nations (in this case: Estonia, Latvia, Kaliningrad and factions from Lithuania that didn't want to merge with Poland) merged and rose to be one of the most powerful political entities within known space.