Opinion of the European Central Bank of 22 March 2012 on a proposal for a directive on markets in financial instruments repealing Directive 2004/39/EC of the European Parliament and of the Council, (ii) a proposal for a regulation on markets in financial instruments and amending Regulation [EMIR] on OTC derivatives, central counterparties and trade repositories, (iii) a proposal for a directive on criminal sanctions for insider dealing and market manipulation and (iv)a proposal for a regulation on insider dealing and market manipulation (market abuse)