Term : Vene Föderaalne Julgeolekuteenistus (FSB)

According to the FSB, Dugina's killer fled to Estonia through the Pskov region

FSB hired local thug to keep an eye on border guard

Spy left out in the cold: my homeland forgot about me

Arrests take romance out of spying

FSB agent tried to penetrate computer networks

Estonian officials detain suspected Russian FSB agent

FSB presents evidence to Susi

Brothel patron lacked state acceptance

Raivo Susi not hoping for quick exchange

Russia refuses to cooperate with Estonia in investigating Kohver case