Russia-Ukraine economics

Russia's President Vladimir Putin gestures after signing a treaty on the Ukrainian Black Sea Crimea peninsula becoming part of Russia in the Kremlin in Moscow on March 18, 2014, with Crimean parliament speaker Vladimir Konstantinov and Alexei Chaly, Sevastopol's new de facto mayor. AFP PHOTO/KIRILL KUDRYAVTSEV (Photo credit should read KIRILL KUDRYAVTSE

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    Russia-Ukraine economics

CNN's John Defterios talks to Alekey Ulyukaev, who says Russia doesn't have a symmetrical response to economic sanctions