Sanctions will cost Russia more than $100 billion: Medvedev

``Western sanctions imposed over Crimea and Moscow's support for separatist rebels in eastern Ukraine had cost Russia $26.7 billion in 2014. This year, the costs could balloon to $80 billion, [Medvdev] said... The latest trade statistics show just how bad the situation has become. The value of Russia's foreign trade slumped 30% in the first two months of this year. Russia's trade with its biggest partner, the European Union, fell by more than a third.''