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International cooperation in conducting procedural actions during the pre-trial investigation in the countries of the European Union and perspectives of its use in Ukraine

The article analyzes some areas of cooperation between law enforcement agencies of the European Union in the field of pre-trial investigation. Particular attention is paid to the European Arrest Warrant and its application. Ukraine aspiring to become a member of the EU must take into account all issues related to the issuance and execution of these warrants. Particular attention is paid to the analysis of more specific problems related to criminal-executive criteria for the perception of life imprisonment as subspecies of imprisonment for a certain period; systemic content ratio of general penitentiary norms, which determine the legal status of convicts sentenced to life imprisonment, and special ones, which should reproduce peculiarities of regime requirements of penitentiary institutions of different security levels (in particular, medium and maximum). It is proved that clarity, completeness and system-legal balance will be facilitated by the formal reproduction in the law of classification of all criminal-executive norms of Chapter 22 of the Criminal Executive Code (hereinafter–CEC) (based on a certain criterion) into norms of general and special significance, which in turn should be divided into the following subtypes. Moreover, the EU countries do not yet have the appropriate practice in the application of these warrants.