Britain has flown 35 military advisers to Ukraine to help fight pro-Russian separatists - with America set to follow suit. But what can the British army offer that Ukraine doesn't have already?
US military tanks arrive in Poland to take part in a Nato military exercises as tensions continue to simmer in eastern Europe.
Russian President Vladimir Putin appears in public for the first time in 11 days at a meeting with the president of Kyrgyzstan in St Petersburg.
From beauty contests to angry protests, events are held around the world to mark International Women's Day.
A man detained on suspicion of murdering the prominent Putin critic Boris Nemtsov has told investigators he was involved, a Russian judge says.
Two suspects are held over the killing of Putin critic Boris Nemtsov near the Kremlin. Colleagues say they fear whoever ordered his death will escape justice.
Hundreds of Russians, many carrying red carnations, attend the funeral of Boris Nemtsov, the Kremlin critic who was shot dead last week.
What does the future hold for Russian politics after one of its most prominent opposition activists was gunned down in front of CCTV cameras, just 200 metres from the Kremlin?
Tens of thousands of supporters march through Moscow in memory of Kremlin opposition figure, Boris Nemtsov, whose murder has increased concern about Russia's future among opponents of President Putin.