Moreover, there are those who feel that the provisions of the Convention on a number of investigative techniques will probably not result in real progress compared with currently existing co-operation, since their application is usually left to national legislation.
De plus, des pessimistes prédisent que les dispositions de la convention relatives à certaines techniques d'enquête n'apporteront pas de réel progrès par rapport à la situation actuelle, parce que leur application est généralement du ressort de la législation nationale.