Why not? The Swedes gave the Russian Empire its original name (Rus), and ruled the place for generations, until the Khans showed up.
Don't tell the FR "Russia First" faction that the Rus were not slavic, you'll ruin their whole day!
Rurik and his bunch were a minority upper class who were absorbed in 2 generations. You might as well tell the Bulgarians they're not slavs either because the Bulgars are an asiatic people, part of whom settled on the Volga and part in Bulgaria, again absorbed. The same for the Italian/Germanic nobility in Romania.