The British Security Agency is the British intelligence and national security agency. It operates under the leadership of the Secretary of the Interior. However, it is not affiliated to the British Ministry of the Interior. It is responsible for combating serious crimes, military separatism, terrorism and espionage. The external national security affairs are It is in charge of MI6. On the eve of the First World War, in addition to MI5 and VI, the Intelligence Bureau had 15 departments at that time. For example, MI1 was responsible for cracking codes, and the others were responsible for dealing with intelligence related to Russia and Northern Europe. Later, the departments were reorganized and included five departments respectively. And six places. The two names of MI5 and VI have been in use for nearly a century. By 1994, they were officially named the Ministry of National Security and the Secret Intelligence Service, clearly reflecting their responsibilities. As an intelligence agency, the British Security Service does not have the power to arrest people, so it generally cooperates with the police during operations.
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