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The RSHA, short for Reichssicherheitshauptamt (Reich Security Main Office), was the central security service of Nazi Germany and controlled Müller's Gestapo (Secret State Police). The RSHA was responsible for domestic and foreign intelligence gathering, counter-espionage, and political repression. It played a key role in the Holocaust by coordinating the activities of various Nazi agencies involved in the persecution and extermination of Jews and other minority groups.