A portrait of murdered Russian opposition veteran leader Boris Nemtsov among  tributes in his memory at the site of his killing in central Moscow. His girlfriend has broken her public silence on the murder of the Russian opposition activist, saying she did not see the killer who shot him as they strolled across a bridge near the Kremlin. Photograph: Sergei Ilnitsky/EPA. 1:33

Boris Nemtsov’s girlfriend has broken her public silence on the murder of the Russian opposition activist, saying she did not see the killer who shot (...)

Tens of thousands of people marching in Moscow in memory of Russian opposition leader Boris Nemtsov who was gunned down near the Kremlin. The captions read “Those bullets for everyone of us, heroes never die”. Photograph: AP Photo/Pavel Golovkin 1:38

In the summer of 1994 Boris Nemtsov was a frequent telephone caller to our house in Washington DC as his 10-year-old daughter Zhanna was staying with (...)

People carry Russian national flags during a march in Moscow in memory of opposition leader Boris Nemtsov, who was gunned down on Friday close to the Kremlin. Photograph: Dmitry Lovetsky/AP 1:38

It would take nerves of steel to conduct a Mafia style killing on the bridge near the heavily guarded Moscow Kremlin where a gunman shot dead Boris Ne(...)

Thousands  march to commemorate Kremlin critic Boris Nemtsov, who was shot dead on Friday night, in central Moscow on Sunday. The crowd hold placards declaring ‘I am not afraid’. Photograph: Sergei Karpukhin/Reuters

Tens of thousands of people marched through Moscow on Sunday to honor Boris Nemtsov, the Russian opposition politician who was shot dead on Friday nig(...)

Russia’s opposition supporters march in memory of murdered Kremlin critic Boris Nemtsov in central Moscow. Photgraph: Getty Images

Holding placards declaring “I am not afraid”, thousands of Russians marched in Moscow on Sunday in memory of Kremlin critic Boris Nemtsov, whose murd(...)

Taavi Roivas of the Reform Party which has 29.2 per cent of the vote with more than two-thirds of the votes counted.  Photograph: Ints Kalnins/Reuters

Estonia’s ruling centre-right party took the lead after an election on Sunday overshadowed by fears that neighbouring Russia might interfere in the sm(...)

Flowers and candles mark the spot where Boris Nemtsov was shot dead in Moscow on Friday night. Photograph: EPA

Opposition supporters will march through Moscow on Sunday in memory of Kremlin critic Boris Nemtsov, whose murder has increased concern about Russia’(...)

The body of Russian opposition leader Boris Nemtsov is covered with plastic lies on Moskvoretsky bridge near St. Basil cathedral  in central Moscow. Photograph: AFP

Ukrainian president Petro Poroshenko said on Saturday Russian opposition politician Boris Nemtsov was murdered because he planned to disclose evidenc(...)

Pedestrians pass a neon sign displaying the latest Russian rouble exchange rate outside a currency exchange bureau in Moscow. Photograph: Andrey Rudakov/Bloomberg

It would be a mistake to say that the bright lights and jolly Christmas trees decorating the streets of Moscow reflect the national mood as Russia hur(...)

A general view of the Olympic village in the mountain ski resort of Rosa Khutor, a venue for the Sochi 2014 winter Olympics, some 40 kilometres (25 miles) east from Sochi. Photograph: Reuters

What does $51 billion buy you in a Black Sea subtropical resort these days? A heap of trouble, if the preparations for the 2014 Winter Olympics in Soc(...)