Swedish Military Intelligence and Security Service

Military Intelligence and Security Service (Militära underrättelse- och säkerhetstjänsten), MUST, is a division of the Swedish Armed Forces Central Command. It is responsible for Sweden's military intelligence such as acquiring and presenting information that is of military importance regarding foreign powers and managing the security for vital divisions and agencies of the Swedish Armed Forces.

MUST consists of two major departments, Underrättelsekontoret UNDK (Intelligence Office) and Säkerhetskontoret SÄKK (Security Office).
 * UNDK's task is to acquire relevant information which can be used as basis when the Central Command and Ministry of Defence makes decisions, and aids deployed Swedish military units.
 * SÄKK's task is to work with signal protection, investigating persons and information protection.

There is also the KSI, Kontoret för Särskild Inhämtning ("Office for Special Collection") which handles HUMINT and espionage. Little is known about KSI, as it is only mentioned once in Swedish law.

MUST also co-operates with other defence intelligence agencies, such as the Swedish National Defence Radio Establishment (FRA), the Swedish Defence Research Agency (FOI) and the Swedish Defence Materiel Administration (FMV). In contrast to common belief FRA, the Swedish National Defence Radio Establishment, is not a part of MUST but a civil agency.

Current Director of MUST is Major General Stefan Kristiansson. Most employees at MUST are officers, though civil employees are also common, in contrast to other military agencies.