Operative part
On those grounds,
THE COURT,
in answer to the question referred to it by the Conseil d'État by decision of 6 January 1999, hereby rules:
Article 73d(1)(b) of the EC Treaty (now Article 58(1)(b) EC) must be interpreted as precluding a system of prior authorisation for direct foreign investments which confines itself to defining in general terms the affected investments as being investments that are such as to represent a threat to public policy and public security, with the result that the persons concerned are unable to ascertain the specific circumstances in which prior authorisation is required.