Introduction The judgment of the Court of Justice of the European Union (CJEU) in Case C-284/16, Slovak Republic v. Achmea B.V. (Achmea) has attracted much comment in many fora, including the Kluwer Arbitration Blog (See e.g., articles authored by Florian Stefan, Clement Fouchard and Marc Krestin, and Vivek Kapoor). This is not surprising. The CJEU…