Court of Justice 23 February 2016, C-461/14 (European Commission v Kingdom of Spain.)

OPINION OF ADVOCATE GENERAL WAHL delivered on 23 February 2016 ( 1 ) Case C‑461/14 European Commission v Kingdom of Spain ‛Failure of a Member State to fulfil obligations — Level of proof required to establish an infringement — Directive 85/337/EEC — Environmental impact assessment — High-speed railway — Whether assessment adequate — Directive 2009/147/EC — Conservation of wild birds — Special