Supreme Court, I. à X. E. N. v Prosecutor, Nr. P.24.1012.F/1, 18 December 2024
The judgment concerns (among others) an appeal in cassation by a person who was found guilty by the Court of Assizes of the Judicial District of Brussels of genocide and war crimes committed in Rwanda between 9 April and 28 May 1994. The applicant claimed that the conviction for genocide violated the principle of legality in criminal law (inter alia Article 7 ECHR), since Belgian criminal law did not formally criminalize genocide at the time the acts were committed (but did so only as of 1999).
The Supreme Court dismissed the claim since the conviction was based on international law already in force at the time of the acts, namely the 1948 Genocide Convention, ratified by Belgium in 1951. The Court held that this convention defines the offence with sufficient clarity and confirms the existence of an international custom that is binding on States, including within their domestic legal order. Accordingly, the crime of genocide already formed part of the Belgian legal order before the entry into force of the dedicated legislation adopted in 1999. Furthermore, the Court held that whereas the Genocide Convention does not explicitly prescribe penalties, the national judge could determine the sentence under domestic criminal provisions, such as those relating to murder, since the killing of members of the targeted group constitutes one of the constitutive elements of genocide.