This opinion was expressed by the OSCE High Commissioner on National Minorities, Lamberto Zannier in an interview with RIA Novosti.
He said that he respects the aims of the Ukrainian government to increase the role of the Ukrainian language as the language of state. However, Ukraine should remain a space with diverse nationalities and diverse languages, which they should be able to use. Ukraine has in fact vowed to protect languages of minorities and regional languages in international treaties.
Lamberto of course thinks within the discourse of those international treaties, and probably sees the practice in his home country Italy as an example to follow. In Northern Italy, there are areas that have French speakers, German speakers, Slovene speakers, which get protection and rights on a local level. Likewise, regional Romance languages like Sicilian and Venetian are being protected, and developed. I don’t think he fully comprehends the desires of forces within Ukraine to conduct a policy that was last seen in Italy under Il Duce.