FILE PHOTO: A vendor (L) sells eggs at a food market, which operates once a week on Saturday, in the Russian southern city of Stavropol, March 7, 2015. REUTERS/Eduard Korniyenko
FILE PHOTO: A vendor (L) sells eggs at a food market, which operates once a week on Saturday, in the Russian southern city of Stavropol, March 7, 2015. REUTERS/Eduard Korniyenko