(50)Since the objective of this Directive, namely the protection of the financial system by means of prevention, detection and investigation of money laundering and terrorist financing, cannot be sufficiently achieved by the Member States, as individual measures adopted by Member States to protect their financial systems could be inconsistent with the functioning of the internal market and with the prescriptions of the rule of law and Union public policy, but can rather, by reason of the scale and effects of the action, be better achieved at Union level, the Union may adopt measures, in accordance with the principle of subsidiarity as set out in Article 5 of the Treaty on European Union. In accordance with the principle of proportionality, as set out in that Article, this Directive does not go beyond what is necessary in order to achieve that objective.