Ukraine on Tuesday blocked popular Russian social networks and an internet search engine as it expanded sanctions against the Kremlin for its alleged backing of a three-year war in the separatist east.
President Petro Poroshenko signed a decree banning access to the VK social network -- often referred to as Russia's Facebook -- as well as Ukraine's version of the popular Yandex search engine, Mail.ru email provider and the Odnoklassniki (Classmates) social network.