That is the FSB (or (ФСБ). FSM isn't the acronym or a transliteration of any known national intelligence service.
FSB - Federal Security Service, Russia
MSS - Ministry of State Security, China
DGSE - General Directorate for External Security, France
FSM - Federated States of Micronesia National Police would be my best guess. They do dignitary protection and counter-narcotics, so I would assume they have at least some intelligence function.