‘The lack of implementation of the D.H. judgment deeply concerns the three submitting organizations…’. This sentence is taken from a Rule 9 Communication submitted by three NGOs to the Committee of Ministers, the body that supervises the execution of judgments of the European Court of Human Rights (hereafter: ECtHR or Court). It is illustrative of the purpose of Rule 9 Communications: the submitting actor(s), which may be NGOs and National Human Rights Institutions (NHRIs), can provide the Committee of Ministers with their perspective on how a State is progressing with the execution of a judgment of the ECtHR. As such, this Rule 9 provides a crucial opportunity for NGOs and NHRIs to get involved in the execution process of the Court’s judgments. It is therefore striking that over the years, across the board, little attention has been devoted to these Rule 9 Communications. This appears, however, to be changing as the possibilities offered by this Rule 9 are getting more traction (see for instance the new page of the Execution Department). Rightly so, as Rule 9 Communications may play a valuable role in helping ensure the execution of judgments of the ECtHR. In this blog post, I offer a first exploration of Rule 9 Communications, thereby showcasing their potential and advocating their use by NGOs and NHRIs.