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In 2018, the Danish Supreme Court revoked Adam Johansen’s citizenship in conjunction with his conviction for terrorism. Applying a proportionality test adapted from European Court of Human Rights (ECtHR) jurisprudence for naturalised, not natural, citizens, the Danish court determined that Johansen’s Muslim faith tied him to Tunisia, his father’s country, rather than to Denmark. In March 2022, the ECtHR unanimously upheld this judgment. In so doing, the ECtHR solidified an emerging standard in cases of citizenship revocation for natural citizens, which standard is weaker than the protections enjoyed by naturalised citizens. This article reviews the Danish and ECtHR jurisprudence to show how the explosive expansion of citizenship revocation in relation to terror crimes, combined with the ECtHR’s emerging jurisprudence rejecting substantive review for such revocation, demonstrates a significant, multidirectional weakening of rights protections in Europe.
Kerstin Carlson (Wed,) studied this question.