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.).
Chechen language
Unlike most other languages of the Caucasus, Chechen has an extensive inventory of vowel sounds, about 44, putting its range higher than most languages of Europe (most vowels being the product of environmentally-conditioned allophonic variation, which varies by both dialect and method of analysis). Many of the vowels are due to umlaut, which is highly productive in the standard dialect. None of the spelling systems used so far have distinguished the vowels with complete accuracy.