The Court held that it is not contrary to EU law for Member States to withdraw citizenship obtained by deception, even if the effect is to also withdraw citizenship of the Union, so long as the decision observes the principle of proportionality.
The applicant is a former USSR citizen, who has been residing on the territory of Russian Federation since 1990. He has received an "insert" into his passport in 1994 as evidence of him being recognised as a Russian citizen, which was a standard procedure at a time. In 2011 a "verification" took place - a policy that resulted in questioning of many citizenships acquired after the fall of the Soviet Union, including the applicant. The Court sided with the applicant, considering among others that refusal to recognise him as a Russian citizen would result in his statelessness.
A child is born in the Netherlands in 2016, and has resided there since, without a legal residence permit. A request was made on behalf of the child to determine that he has Dutch nationality, on the basis of direct application of article 1 of the 1961 Convention, as he would otherwise be stateless. The Court refuses, as it considers this to be a question of granting Dutch nationality, and not of determination of Dutch nationality, which the Court is not empowered to do.