At least 21 ​​'filtration​​​' sites identified in Russian-controlled ​​territory, say Yale researchers

Researchers at Yale University ​say they have uncovered 21 "​filtration" sites in the Russian-controlled territory of Donetsk ​in eastern Ukraine.

At least 21 ​​'filtration​​​' sites identified in Russian-controlled ​​territory, say Yale researchers
Researchers at Yale University ​say they have uncovered 21 "​filtration" sites in the Russian-controlled territory of Donetsk ​in eastern Ukraine.