I think you mean "Karelia". And "Revanchist", I guess.
The question is why? I mean, the Russian Republic of Karelia (East Karelia) is now majority Russian, IIRC, while the portions of West Karelia that the Soviets took after WW2 have had their Finnish population entirely moved out, and are similar to Kaliningrad in the whole "no one in their right mind would want that" status...