Crimean leader rejects talks offer from federal Ukrainian authorities and seeks Moscow's intervention
Obama says Putin is 'not fooling anyone' as Russian leader defends Moscow's military build-up in Ukraine.
Russian intervention in Ukrainian region of Crimea has sparked global tension
Information war of hacking and censorship has begun between Ukraine and Russia
US economic aid package comes amid tussle with Russia for influence over Ukraine.
Societe General and Commerzbank say investor worries about supply disruption are misplaced.
Investors making "tactical" decisions claims Putin as Ukraine crisis escalates.
Military exercises in area that borders crisis-hit Ukraine ends as scheduled and gold drops from four-month high.
Ukraine can't pay February gas bill from Gazprom, but Russia offers loan of up to $3bn to revolution-hit country.
Obama is accused of ineffective foreign policy sparking doubts on America's strength.
Russia's MICEX index up 4.19% after opening 5% higher.
Barack Obama condemns Moscow for deployment of troops in Crimea and says Russia on 'wrong side of history'.
Parliament claims that loan was agreed to in 2013 by never ratified under ex-President Viktor Yanukovich
Russia says ousted president Yanukovich requested Moscow to send troops to Ukraine
Russian Black Sea Fleet commander Aleksandr Vitko said to have demanded Ukrainian troops give up arms
Gold for immediate delivery rose 1.8% to $1,350.37 an ounce.
Monitoring agency shuts down pro-Maidan groups on VKontakte
Russia's currency has plummeted to all-time low levels against the US dollar and euro
US crude could hit $120 per barrel if war breaks out.
Stoxx Europe 600 index slides 1.6% to 332.55 points.
Russia's state gas producer Gazprom says it may increase gas prices after the first quarter.
Obama to impose economic and political pressure on Russia after Crimea invasion.