TODAY: Russia raises Ukraine gas price for the second time this week; Ukraine vows to respond to and defend against Russian aggression, blames Russia for protester deaths in February; Ryabkov tells U.S. to chill out over Crimea; recession looms, economy contracted in 2014; music labels suing Vkontakte for piracy; JPMorgan to process disputed payment.

In a move widely seen in the West as politically motivated, Russia has hiked the price that Ukraine pays for its gas for the second time this week, creating an overall price rise of 80%, or $100 more per 1,000 cubic meters.  Prime Minister Dmitry Medvedev justified the action by saying it was in line with Russia’s termination of agreements with Ukraine on the Black Sea Fleet.  Ukrainian Prime Minister Arseny Yatseniuk says the price rise is ‘absolutely unacceptable’, but anticipates that Russia will only continue to raise energy pressures for Ukraine, and eventually begin to limit gas supplies.  Yatseniuk also vowed that Ukraine would retaliate against any Russian aggression: ‘If Russia wages war, we will defend our country’.  A billboard in Ukraine’s Donetsk bids ‘goodbye’ to Russia, in advance of a planned anti-Russian action on April 12.  The head of Ukraine’s security service partially blames Russia for the killing of more than 100 protesters in Kiev in February.  Deputy Foreign Minister Sergei Ryabkov suggested that the U.S. should ‘come to terms with the new situation’ in Crimea by replacing its ‘childish tantrums’ with ‘yoga’.  Russia is on the brink of recession; its economy contracted during the first three months of this year, according to a new survey of purchasing managers, indicating that Russia was experiencing economic troubles before Crimea, and that the current international backlash will only prolong stagnation.