(18)The supervisory authorities of the Member States should therefore have at their disposal all means necessary to ensure the orderly pursuit of business by insurance and reinsurance undertakings throughout the Community whether pursued under the right of establishment or the freedom to provide services. In order to ensure the effectiveness of the supervision all actions taken by the supervisory authorities should be proportionate to the nature, scale and complexity of the risks inherent in the business of an insurance or reinsurance undertaking, regardless of the importance of the undertaking concerned for the overall financial stability of the market.