FSB (Russia)

Background
The FSB, Federal Security Service, is the agency responsible for domestic security in Russia.

Colonel Grigori Bulganov interrogated Gabriel Allon and expelled him from Russia. He later assisted Gabriel and Elena Kharkov in their attempt to take documents from the safe of Ivan Kharkov and to escape from Russia.

A colonel ordered Russian special operations troops in intervene when Ivan Kharkov was holding Israelis hostage.