What is not sufficently emphasised imho is the risk to the entire legal framework of the EU. It's not just a matter of EMU. The primacy and thus the consistency of EU law is at stake.
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We are indeed on a slippery slope. Let us be clear: The GCC (a majority of 7:1 judges) is of the opinion that the ECJ has made an error in interpreting EU law. This is not just a technical mon pol issue.
(Ta @BJMbraun)
Some comments to follow...
What is important now is that the EU insitutions, particulary those whose competence (in the double sense) the GCC has attacked, do not now jump through the hoop it is holding out.
h/t @Matze_Weber
@SDullien @PeterBofinger @AchimTruger
(h/t @Shahinvallee)