TODAY: Activists held at Moscow protest rally; Luke Harding returns to Moscow; Lavrov begins British visit; son of Khodorkovsky lobbies for father at Grammy awards.  Nemtsov takes on Moscow judge over chair issue; policeman handed down 12 years for murder of journalist.  Georgia sells idea of united Caucasus; Medvedev lauds multiculturalism; anti-authoritarian art group Voina shortlisted for prize; new poll reveals high levels of ignorance

Russian police detained opposition leader Sergei Udaltsov of the anti-Kremlin Left Front group and a dozen activists during a weekend rally in Moscow that attracted hundreds of protesters.  RFE/RL has a video from the event, which had initially been sanctioned by City Hall.  Following his expulsion from the country, the authorities would appear to have backtracked on the fate of Guardian reporter Luke Harding, to whom a new visa was issued on Saturday.  As Russian Foreign Minister Sergei Lavrov touches down in London for a rare meeting with his British counterpart, the Guardian’s Julian Glover argues: ‘We have no sway over Russia. We need its money. But we should be ashamed by the direction in which this pulls us’.  The lawyers of jailed Yukos founder Mikhail Khodorkovsky have argued that the visit should be used as an opportunity for Britain to exert pressure on Russia over the case: ‘Lavrov must realise that he cannot pick and choose when Russia wants to be a part of the international community’.  Meanwhile Khodorkovsky’s son, Pavel, represented Estonian composer Arvo Part (who dedicated his ‘Symphony No 4’ to the incarcerated tycoon) at last night’s Grammy awards to draw attention to his father’s plight, at the composer’s request.