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.).
Chechens
Nakh peoples such as Chechens are thought to either be descended from original settlers of the Caucasus (North and/or South) or supposedly Nakh-speaking ethnic minorities in the north-eastern regions of the ancient state of Urartu (whose people also spoke a language that was possibly related to the Nakh languages). The two theories are not mutually incompatible, and there has been much evidence that seems to link both of the two together (either by dual origins or the "return" theory, in which the Nakh peoples originally lived in the Caucasus and then returned). Chechen genetics show a high level of genetic diversity (see section below).