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 language
Chukchi is a Chukotko–Kamchatkan language spoken by the Chukchi people in the easternmost extremity of Siberia, mainly in Chukotka Autonomous Okrug. According to the Russian Census of 2002, about 7,000 of the 15,700 Chukchi people speak Chukchi; knowledge of the Chukchi language is decreasing, and most Chukchi now speak the Russian language (fewer than 100 report not speaking Russian at all).