参考記事・出典
https://timesofindia.indiatimes.com/world/europe/siberian-battalion-the-new-ukraine-unit-formed-entirely-of-russians/articleshow/104764598.cms?from=mdr
https://www.voanews.com/a/alaska-asylum-seekers-are-indigenous-siberians-from-russia/6801611.html
https://en.wikipedia.org/wiki/History_of_Siberia
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