This article deals with the issue of the implementation of the Achmea judgment of the Court of Justice of the European Union (CJEU) through the Termination Agreement of Bilateral Investment Treaties ('Termination Agreement', TA) between some Member States of the European Union (EU). The article focuses on the analysis of the TA provisions that terminate Bilateral Investment Treaties ('intra-EU BITs') and investor-State dispute settlement (ISDS) among EU Members. It also describes TA provisions regulating concluded, new, and