“…In addition to the different opt-outs, 3 a number of provisions of the Treaty emphasize respect of national sovereignty in security and criminal matters. For example, harmonization in criminal law shall take place by means of Directives (Articles 82(2), 83(1) and (2) TFEU), leaving considerable margin for manoeuvre to Member States on the implementation of EU law (for a detailed overview see Miettinen, 2013;Mitsilegas, 2010). In addition, articles 82(3) and 83(3) TFEU, provide an 'emergency brake' mechanism, which enables Member States to suspend the legislative process if a draft directive affects fundamental aspects of their criminal justice systems (Peers, 2008).…”