Russia

Tens of thousands of Russians have marched in Moscow in memory of the slain Kremlin critic Boris Nemtsov. Mr Nemtsov was gunned down while walking home from a restaurant near the Kremlin. Audio

The ceasefire agreed between pro-Russian separatists and Ukraine's government is all but in tatters as fighting continues. Audio

The Ukrainian president Petro Poroshenko says 80 percent of the government forces have been withdrawn from the strategic eastern town of Debaltseve Audio

Russia's president Vladimir Putin has told Ukrainian soldiers to surrender to pro-Moscow rebels who have fought their way to the town of Debaltseve. Audio

Russian-backed rebels in eastern Ukraine say they have taken control of the railway station and the eastern outskirts of the town of Debaltseve Audio

Hedge fund manager Bill Browder on his campaign to avenge his Russian lawyer's death in custody and how he became one of Vladimir Putin's most wanted. Bill Browder is a Chicago-born, UK-based hedge… Audio

Ukraine's President Petro Poroshenko admits leaders still have a lot of work to do, despite agreeing to a ceasefire with Russia. Audio

Ukraine is claiming that Russian regular forces have attacked its army units as they fight pro-Russian rebels in control of eastern areas of the country. Audio

Investigative journalist Hajo Seppelt has made a documentary for German television, which alleges systematic doping among Russian athletes, and accuses Russian and international sports officials of a… Audio

Lidia Kelly is the Reuters Macroeconomics Correspondent, based in Moscow. Audio

President Vladimir Putin has held a marathon "end of year news" conference in an attempt to reassure Russians not to panic as their economy slides towards recession. Audio

Russian president Vladimir Putin is planning new measures to stabilise the slumping ruble. Audio

The Russian rouble has crashed to a dramatic low a day after Moscow hiked interest rates by 17 percent to try to halt the currency's downward spiral. Audio

Moscow had planned to celebrate the final instalment of Peter Jackson's film adaptation of The Hobbit, by putting an Eye of Sauron-style light on top of a skyscraper. But now, that plan has been… Audio

Ukraine has elected a new government while facing increasing economic pressures; and Vladimir Putin give state of the nation speech with anti-west rhetoric. Audio

Claire Clausen reports from Denmark, where they've just accepted 20,000 asylum seekers - which is causing issues. Audio

Associate professor in the Department of Political Science at the University of Calgary, Rob Huebert is an expert on Canadian Arctic Security. He is also the associate director of the Centre for… Audio

International Relations Professor Alexander Sergunin of St. Petersburg State University has written extensively about Russia's militarisation of the Arctic region, and talks about Russia's claim to… Audio

The Swedish military is searching for evidence of a Russian submarine after several possible sightings off its coast. Audio

Silver Tambur from Estonia discusses same sex marriage, gay rights, and where the neighbours, Russia, are causing some concern. Audio