Call-In Mechanisms and Legal Certainty: The ECN Joint Statement of 23 June 2026 as a Tacit Endorsement* On 23 June 2026, the European Competition Network ("ECN") [1] published a Joint Statement setting out common principles for the implementation of merger call-in mechanisms across the EEA. [2] Carefully framed as neither a mandate nor a blueprint, the document nonetheless constitutes a powerful signal in favour of this sub-threshold review instrument, and, less visibly, a warning to all ma...