Glavnoye Razvedyvatel’noye Upravlenie (GRU)

Glavnoye Razvedyvatel’noye Upravlenie (Chief Intelligence Directorate of the General Staff); also known as Russian Military Intelligence.

Source: Terms & Definitions of Interest for DoD Counterintelligence Professionals, Office of the National Counterintelligence, https://www.dni.gov/files/NCSC/documents/ci/CI_Glossary.pdf