Moscow - Russian opposition politicians and Kremlin critics Garry Kasparov and Boris Nemtsov founded a new political party named Solidarity in Moscow Saturday.
Representatives of various social groups would work together in the new democratic movement, Ekho Moskvy (Echo of Moscow) radio reported.
The traditionally splintered Russian opposition has been trying to unite against what it sees as an increasingly authoritarian Kremlin.
The party, which plans to present its manifesto in the spring, does not have any official status.
More than 300 opposition politicians from 45 regions took part in the meeting to form the party, Russian media reported.