Chechens
In 1989, 73.4% spoke Russian, though this figure has declined due to the wars for a large number of reasons (including the lack of proper education, the refusal to learn the language, and the mass dispersal of the Chechen diaspora due to the war). Chechens in the diaspora often speak the language of the country they live in (English, German, Arabic, Polish, Georgian, etc.).
Chukchi people
The Chukchi, or Chukchee (, ), are an indigenous people inhabiting the Chukchi Peninsula and the shores of the Chukchi Sea and the Bering Sea region of the Arctic Ocean within the Russian Federation. They speak the Chukchi language. The Chukchi originated from the people living around the Okhotsk Sea. According to most recent genomic research ("Who we are and how we got here. Ancient DNA and the New Science of the human past", by David Reich. Pantheon books, New York, 2018), Chukchi people are the closest cousins of the First Americans in Asia.