The reference from the Irish Supreme Court seeking a preliminary ruling in thePringlecase concerns the compatibility of the Treaty establishing the European Stability Mechanism (hereinafter ESM Treaty or ESMT) with European Union (EU) law. The Irish Supreme Court was concerned with the legal significance of Council Decision 2011/199, which amended the Treaty on the Functioning of the European Union (TFEU) by inserting a third paragraph in Art 136 TFEU. The new Art 136(3) provides that the Member States whose currency is the euro, may establish a mechanism such as the European Stability Mechanism (ESM) so long as that mechanism is only activated when indispensable to safeguarding the stability of the euro area as a whole, and only if the financial assistance is made subject to strict conditionality. But, because Decision 2011/199 has not yet been ratified by all Member States, the TFEU has not yet been amended. The ESMT nevertheless entered into force at the end of September 2012, and the ESMT commenced its operations in December 2012.