Opposition supporters will march through Moscow on Sunday in memory of Kremlin critic Boris Nemtsov, whose murder has increased concern about Russia's future among opponents of President Vladimir Putin.
Sergei Pugachev, a Russian tycoon once dubbed "the cashier to the Kremlin," must disclose further information about the trusts he uses to bolster his income, a London Court of Appeal judge ruled on Friday.
In Russia, Vladimir Putin likes to portray himself as the saviour of the nation. In Europe and the United States he has come to be seen as a threat to the new world order.
Ukraine said on Sunday it feared unrest could spread beyond territory held by pro-Russian separatists, after an explosion killed two people at a memorial rally in an eastern city far from the front line.
