The Russian government announced on Aug. 7 that it's prepared to retaliate against the countries who've sanctioned it for misbehavior in Ukraine. The first step - a ban on Russian imports of most agricultural products from sanctioning countries.
Russia's War Against Ukraine
Vox: Five facts about Russia’s new sanctions on the west
Russia's President Vladimir Putin attends a ceremony of accepting the credentials of the new foreign ambassadors in Aleksandrovsky (Alexander's) Hall at the Grand Kremlin Palace in Moscow, on June 27, 2014.