SPOILERS FOLLOW
Konkordia in the game is the religious empire which attacks Earth and its colonies (United Nations) by surprise (but it became evident that UN planned attack on Konkordia too). Since player is an UN space fighter pilot, Konkordian forces are one of the main enemies in the game (at the start they are allies though). Konkordians are shown as religious people, but not as 100% bad or 100% good. For example, main character may fall in love with Konkordian female officer and save her before and during the war. In general, i would say that Russians in some games are portrayed much worse than Konkordians in this one
By the way, do the Konkordian ship and base names mean something in Farsi? For example, Atur-Gushnasp, Atur-Farnbag, Fravashi, Kersasp, Hordad, Atur-Bezen-Mihr, Frashaostra, Hvarena, Rimush, Ardibehesht, Gurgsar, Hosrov, Varegna, Aurvant, Shivatir, Vistashpa, Jamaspa? Some are clear though, for example Kir the Great.