“…Pupino indeed confirmed a trend in the ECJ's case-law to the effect that compliance with the Convention as interpreted by the Strasbourg Court is ever more to be considered part of compliance with EU law, in other words that Convention legality has become part of EU legality. 5 On this basis, with the Convention being applied by the ECJ in conformity with its interpretation by the Strasbourg Court, a good deal of harmony and legal certainty has already been -and continues to be -achieved in this area, thus preventing Member States from finding themselves trapped by diverging or even contradictory requirements.…”