Ukrainian Far Eastern Sich
The Ukrainian Far Eastern Sich (Ukrainian: Українська Далекосхідна Січ) was a paramilitary and cultural organisation (a sich) consisting of Ukrainian diaspora living in Harbin, China, then part of the Japanese puppet state of Manchukuo. The sich sought to establish Green Ukraine, a proposed Ukrainian nation state in the Russian Far East, with the help of Imperial Japan.
Source: Wikipedia — Ukrainian Far Eastern Sich (CC BY-SA 4.0)