Yasak v. Türkiye

Yasak v. Türkiye (Application no. 17389/20) was a Grand Chamber judgment of the European Court of Human Rights concerning the conviction of Şaban Yasak for membership of an armed terrorist organisation and the conditions of his detention in Çorum Prison.

Introduction

The Court held that Article 7 of the European Convention on Human Rights (no punishment without law) had been violated because the domestic courts had not carried out an individualised and contextual assessment of the applicant’s criminal intent, and that Article 3 of the Convention (prohibition of inhuman or degrading treatment) had been violated because the cumulative conditions of detention had reached the minimum level of severity.

The case arose from criminal proceedings brought in Türkiye after the 2016 attempted coup d’état and the subsequent prosecutions linked to the organisation. The applicant, Şaban Yasak, was convicted under Article 314 of the Turkish Criminal Code for membership of an armed terrorist organisation. The case first came before a Chamber of the Court, which found no violation, and was later referred to the Grand Chamber, which reached different conclusions on the main complaints.

Background

The events took place against the background of the 15 July 2016 attempted coup d’état, after which the Turkish authorities declared a state of emergency and attributed responsibility to the network associated with Fetullah Gülen. Turkish courts increasingly treated the organisation as a terrorist organisation during 2016 and 2017, and numerous prosecutions followed on membership-related charges. In this broader context, the case became one of the Court’s post-coup judgments on the limits of criminal liability under Article 7.

The Court also situated the case within the wider domestic practice concerning the concepts of irtibat (connection/linkage) and iltisak (affiliation/association), which Turkish authorities used in post-coup prosecutions to describe alleged links or affinity with the organisation. The Grand Chamber’s approach emphasised that such concepts could not replace an individualised criminal-law assessment of whether the applicant had personally satisfied the legal elements of the offence.

The applicant was searched by the police in January 2017, surrendered himself days later, and gave a statement denying membership of any organisation while acknowledging attendance at meetings connected with institutions linked to the movement. The Çorum Public Prosecutor’s Office later filed an indictment accusing him of belonging to the organisation, and the domestic trial court convicted him on the basis of witness statements, banking evidence, social-security data, telephone records, and other material. The conviction was upheld on appeal, and the Constitutional Court later dismissed his individual application concerning detention conditions.

The domestic courts also relied on evidence suggesting that the applicant had maintained contact with persons and institutions considered to be linked with the organisation. In the Court’s reasoning, however, contact, affinity, or association did not by itself establish criminal membership unless the courts had shown a personal, functional, or hierarchical link and the requisite mens rea. The judgment therefore distinguished between mere irtibat/iltisak and conduct amounting to criminal participation.

Court judgments

ECtHR Chamber judgment

Before the Grand Chamber referral, the ECtHR Chamber declared the Article 3 and Article 7 complaints admissible but found no violation of either provision. The Chamber considered that the domestic courts had acted within the margin available to them and that the detention conditions, taken as a whole, had not crossed the threshold required for Article 3. The Grand Chamber later revisited both findings.

Grand Chamber proceedings

The case was referred to the Grand Chamber after the applicant’s request under Article 43 of the Convention had been accepted. The Government asked the Grand Chamber to reconsider the referral decision, but that request was rejected, and the Court proceeded to determine the case afresh. The Grand Chamber judgment was adopted by a majority, with separate and dissenting opinions appended.

Article 7 assessment

The Grand Chamber held that the applicant’s conviction breached Article 7 because the domestic courts had not shown, through an individualised assessment, that he had acted with the requisite mens rea for membership of an armed terrorist organisation. The Court stressed that criminal liability had to be based on personal culpability and that it had not been sufficient to rely on general statements about the organisation’s development, on the applicant’s educational or social contacts, on broad notions of irtibat (connection/linkage) or iltisak (affiliation/association), or on contextual assumptions about his awareness of the organisation’s alleged purpose.

The Court also emphasised that the domestic courts had failed to establish a personal, functional, or hierarchical link between the applicant and the organisation’s strategic branches. It considered that the reasoning used in the domestic judgments had been too general and that the applicant had effectively been convicted on the basis of association rather than demonstrated individual intent. In this respect, the Grand Chamber reiterated that Article 7 required foreseeability, legal certainty, and a sufficiently concrete link between the accused person’s conduct and the elements of the offence.

The judgment also reflected the Court’s rejection of criminal liability based on labels or coded references alone. A codename, nickname, or shorthand reference to a person’s alleged connection with the organisation did not, by itself, establish that the applicant had committed a criminal offence unless the domestic courts had demonstrated how that reference linked the person to the statutory elements of membership. The Court’s analysis therefore required proof of conduct, intent, and contextual participation, not merely the presence of an organisational label.

Article 3 assessment

On Article 3, the Grand Chamber found that the cumulative conditions of detention in Çorum Prison crossed the minimum level of severity. The Court attached weight to overcrowding, lack of sleeping space, poor ventilation, noise, limited sanitary facilities, and the practical consequences of having to sleep on a mattress on the floor or in communal areas for a prolonged period. It held that these conditions, taken together, amounted to degrading treatment.

The Court also treated the overcrowding issue as part of a broader structural problem in the prison system rather than an isolated incident. This aspect of the judgment linked the applicant’s complaint to the general question of detention standards in Türkiye and the Court’s case-law on prison capacity, sleeping arrangements, and access to basic amenities.

The case turned on Article 314 of the Turkish Criminal Code and the Prevention of Terrorism Act. Turkish law punished membership of an armed organisation, but the Strasbourg Court examined whether the domestic application of those provisions remained compatible with the Convention principle of legality. The Grand Chamber’s answer was that the legal framework was not applied with the necessary precision in the applicant’s case, because the domestic courts had not adequately established the mental element of the offence.

The Court’s analysis also showed that concepts such as irtibat (connection/linkage) and iltisak (affiliation/association) could not substitute for proof of criminal membership, and that mere proximity to persons or institutions associated with the organisation was not enough in itself to satisfy Article 7. The decision therefore stressed the distinction between administrative or political characterisations and criminal-law proof.

Reactions

The judgment attracted attention in both Turkish and international legal circles, particularly because it was read alongside earlier Strasbourg case-law on post-coup prosecutions and because of its implications for large numbers of similar convictions. Commentators focused on the Court’s insistence on individualised criminal responsibility, its rejection of generalised reasoning, and its approach to detention conditions as a Convention issue separate from the terrorism-related conviction.

The case also drew commentary in specialised legal and human-rights publications, including analyses by ECHR CaseLaw, ASIL, Justice Uphold, Stockholm Center for Freedom, Turkish Minute, Balkan Insight, UK Human Rights Blog and Dejure.org

Critics and supporters of the judgment also debated how far the Court had gone in relation to the line of cases on post-coup prosecutions, including whether the decision reinforced or narrowed the earlier approach taken in similar cases. Media coverage in Türkiye described the case as important for prosecutions based on organisational links, coded references, and contextual evidence.

Separate opinions

The Grand Chamber judgment included separate opinions, reflecting disagreement over the majority’s approach to the Article 7 analysis and the treatment of the domestic courts’ reasoning. Those opinions highlighted the legal debate over how Strasbourg should assess post-coup terrorism convictions, foreseeability under criminal law, and the extent to which national courts had to individualise guilt in cases involving alleged membership of clandestine organisations.

Significance

The judgment became significant for its treatment of the principle that no one could be punished without personal criminal intent being established. It also contributed to the Strasbourg case-law on overcrowded prison conditions and reinforced the Court’s emphasis on the need for concrete, individualised proof rather than broad assumptions drawn from a person’s social, educational, or organisational environment.

It was also significant for clarifying that concepts such as irtibat (connection/linkage), iltisak (affiliation/association), coded references, and general organisational association could not replace the Convention requirement of individualised criminal responsibility. In that respect, the judgment formed part of the broader Strasbourg discussion about the limits of terrorism-related convictions and the necessity of proof linking the accused person to the offence in a legally precise manner.

See also

  • Yalçınkaya v. Türkiye
  • Article 7 of the European Convention on Human Rights
  • European Court of Human Rights
  • Court of Cassation (Turkey)
  • Constitutional Court of Turkey