Russia depends heavily on imported foodstuffs…..
Check it out:

Russia announced Thursday that it had banned imports of meat, fish, milk and milk products and fruit and vegetables from the United States, the European Union, Australia, Canada and Norway.

Russian Prime Minister Dmitry Medvedev announced the import ban on orders from the country’s president, Vladimir Putin in response to sanctions imposed on Russia by the West over the crisis in Ukraine. The ban has been introduced for one year.

Medvedev also said that Russia is considering banning Western carriers from flying over Russia on flights to and from Asia — a move that would significantly swell costs and increase flight time. He said the decision on that hasn’t been made yet.