Estonia accused Russia of state terrorism.
Estonian Interior Minister Igor Taro said that Russian sabotage in Europe cannot be considered just hybrid attacks.
According to him, this is full-fledged state terrorism - direct attacks on infrastructure and critical defense facilities.
As an example, Taro mentioned the setting fire to a facility of the Estonian company Milrem Robotics, which develops military robotics. The saboteurs were recruited by Russia.
The minister said that Estonia is investigating the latest cyber-attacks and checking for possible holes in the infrastructure.
According to Taro, Russia is responsible for 90% of internal security threats to Estonia, China for 5%, and the remaining threats come from other sources.
Earlier, Irish intelligence services suspected Russia of orchestrating a wave of false reports on mining ahead of the Dublin summit.