Anne-Maarja Olei said the ban mostly covered Russians, Ukrainians and Armenians, some of whom could pose a threat to Estonian sovereignty. Foreigners who have been arrested by the police over public order violations were also put on the black list.
The Estonian Citizenship and Migration Department said 11 people, including three Russians, were extradited from Estonia in April.
Relations between Estonia and Russia have been marred since the scandal around the removal of a Soviet-era memorial from central Tallinn shortly before VE Day celebrations. The removal sparked violent protests from the ex-Soviet republic's ethnic Russian minority. One person was killed and several dozen injured in clashes with police April 27. Moscow issued strong protests, with some parliamentarians calling for cutting diplomatic ties with Tallinn.
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During the 11th Annual Meeting to be held in Sochi from October 22 to 24, experts of the Valdai International Discussion Club will focus on whether the global community will develop ground rules for the world politics or whether it will be a game without any rules where everyone fend for themselves.