The revocation of an assurance of naturalisation must have due regard to the principle of proportionality where that revocation prevents the person concerned from recovering the citizenship of the Union, the Court of Justice of the European Union (CJEU) ruled in a judgment (C-118/20) on Tuesday 18 January.
This judgment follows the case in the main proceedings between the Austrian authorities and an Estonian national who had been living in Austria for several years and had become stateless...