Question juridique clé
Whether the extradition appeal met the admissibility requirement of an especially significant case under Art. 84 BGG.
Solution extraite
No especially significant case existed; the appeal was inadmissible.
Motifs extraits
The case concerned extradition, but there were no indications of severe defects in the Russian criminal proceedings or violations of elementary procedural guarantees in the Swiss extradition proceedings. The legal threshold of Art. 84 BGG is restrictive.