Legal summary May 2026 Yasak v. Türkiye [GC] - 17389/20 Judgment 5.5.2026 [GC] Article 7 Article 7-1 Nulla poena sine lege Nullum crimen sine lege Conviction for membership of an armed terrorist organisation without establishing the mens rea required for the offence, through an individualised and contextual assessment of criminal liability:violation Facts – In February 2018 the Assize Court …