(17)Since the objectives of this Regulation, namely the harmonised monitoring of the trade in drug precursors and the avoidance of its diversion to the illicit manufacture of synthetic drugs and psychotropic substances, cannot be sufficiently achieved by the Member States and can therefore, by reason of the international and changeable nature of such trade, be better achieved at Community level, the Community may adopt measures, in accordance with the principle of subsidiarity as set out in Article 5 of the Treaty. In accordance with the principle of proportionality, as set out in that Article, this Regulation does not go beyond what is necessary in order to achieve those objectives.