On July 10 this year, Russian authorities designated Nadezhdin as a “foreign agent,” effectively preventing him from running in any future elections.

Police summon Kremlin critic Boris Nadezhdin to court on extremism charges, a case that could block his bid for September's parliamentary elections.

Russian opposition politician Boris Nadezhdin was released from police custody after being detained on July 13 over alleged display of "extremist symbols," according to Russian…