A lot of people know about the European Union. It's an economic and political union initially designed to prevent another war in Europe by creating strong economic ties on the continent, so the country deciding to abandon them rapidly wouldn't be able to compete in its semi-dependable state. Some are calling the EU the first organization to operate above the nation's scale.
But in a different universe, it became far more complex and powerful, and in the end, it was the only democratic superpower on a planet. Of course, the fate is evil and envy to the success, though the entire continent (plus another "small" bit of land) got displaced to a very different world.
Welcome to the new journey of the old world
Inspired by Shouldn't have enslaved humanity, survival of the free world, libert galit fraternit
Is this based off of another story?
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ISOT (Island in the Sea of Time) is a whole genre of speculative fiction by itself since the eponymous S.M. Stirling novel.
On this site, many TCB stories are technically ISOTs (with Equestria being ISOTed to Earth).
I recall someone once tried to do the same thing with the US (which might be the story you're thinking of), but it never got far beyond the premise — there might be others, but it's the only one I can think of at the top of my head.
This has a Title very similar to an epic magnum opus called "Cross the Rubicon: Choices" The Story of one Amber Unicorn.
more like russia