In The Fire Rises , Russia supports the Texas National Movement rather than a U.S. state itself. A discussion post about the mod explicitly says, “it’s the Texas National Movement, which Russia can support”.

Quick context

The confusion usually comes from mixing the mod’s factions with real-world geography. In that setting, Russia’s support is tied to a separatist movement in Texas, not a normal U.S. state government.

Clean answer

  • Supported side: Texas National Movement.
  • Not a state government: It is a movement, not “Texas” as an official state authority.

Note on accuracy

There doesn’t appear to be a solid in-game reference in the sources I found beyond community discussion, so the safest answer is that Russia supports the Texas separatist path in the mod.