Ethnic Japanese usually refer to those who live outside Japan but originally came from mainland Japan or those descendants. The majority of them live in regions such as:
... [SRI]
Russia
Federalnaya Sluzhba Bezopasnosti (FSB, successor of KGB)
Glavnoye Razvedyvatelnoye Upravlenie[?] (GRU)
Sluzhba Vneshney Razvedki[?] (SVR)
Union of ...