Ukraine is kinda close-by geographically, and geopolitically we "share the enemy" because we had ties with the nazis during WWII, and the Soviets invaded in ’39 to secure St. Petersburg (then known as Leningrad) from a joint Axis attack from the north along the Karelian isthmus.

Tap for spoiler

Of course people don't care to remember that we did eventually invade back into Soviet territory (further than previous borders) during Operation Barbarossa, which included a joint attack and eventual siege of Leningrad (I've heard tell that it was our own marshall Mannerheim who decided that bombing the ice road across lake Ladoga and thus condemning the people there to starvation was a reasonable thing to do, but then again we also had concentration camps back then far the Karelians so I guess they just actually were really fucking racist)

But even the fact that the chairman or whatever of my country's most popular far-right political party went to address the Ukraine parliament, speaking himself Ukrainian for some reason, didn't straight away make me question the narrative.