Abstract: The subject of the study is materials of prosecutorial, law enforcement and judicial practice, norms of procedural legislation and legislation on the prosecutor's office regulating these public relations, as well as positions formed on the essence of the principle of validity and its implementation in the activities of the prosecutor's office and other law enforcement agencies. The object of the research in the article is the social relations arising from the implementation of the principle of reasonableness of decision-making in the implementation of prosecutorial and other law enforcement activities. The author examines in detail such aspects of the topic as the correlation of validity and objective truth, the main characteristics of the principle and the problem of the correlation of the normative regulation of justification and the empirical task of its establishment. The principle of reasonableness of decision-making is one of the key principles of the activities of the prosecutor's office, other law enforcement agencies, as well as regulatory bodies; the need for reasonableness of decisions taken by law enforcement officials is stated in many regulations. At the same time, legal acts do not contain regulation of this fundamental principle; there is practically no scientific elaboration of it, there are only studies of its individual aspects, without highlighting the key provisions, the study of which in the activities of law enforcement agencies and in more detail the prosecutor's office is devoted to the article, what is the novelty of the study.
In the course of the research, the views of scientists on the content of the principle of validity, the procedure for its legal regulation were studied, as a result of which the main characteristics of this principle were identified, which should be the basis for the legal regulation of the principle in relation to the activities of the prosecutor's office and the court. The conclusion is formulated about the need to consolidate this principle in the Law on the Prosecutor's Office, which will prevent the adoption of unreasonable decisions possible if this principle is not observed, and abuse of authority, which in turn can lead to a violation of the principle of legality, which is a special contribution of the author to the study of this topic.

Abstract: The subject of the study are materials of prosecutorial, law enforcement and judicial practice, norms of procedural legislation and legislation on the prosecutor's office regulating these public relations, as well as positions formed on the issue of the essence of the principle of objective truth and its implementation in the activities of the prosecutor's office and the court. The object of research in the article is social relations arising from the implementation of the principle of objective truth in the implementation of supervisory and non-supervisory activities by prosecutors. The author examines in detail such aspects of the topic as the nature of the truth established in the course of law enforcement, the ratio of reliability and probability, as well as the inclusion in the principle of legal assessment of existing facts. В  The principle of objective truth has been given attention in the scientific literature, but this principle has been investigated in relation to the administration of justice. Meanwhile, the implementation of the principle is undoubtedly important in the implementation of prosecutorial and other law enforcement activities, however, it has not been studied before in relation to the activities of the prosecutor's office; this is the novelty of the study. In the course of the study, the views of scientists on the existence of the principle of objective truth, the main aspects of its content were studied, as a result of which the definition of the principle of objective truth in the activities of the prosecutor's office was proposed and the conclusion was formulated that the consolidation of this principle in the Law on the Prosecutor's Office will fill the gaps in the legal regulation of the exercise of prosecutorial powers in other areas of prosecutorial activity and it will prevent the adoption of unreasonable decisions that are possible if this principle is not observed, which, in turn, can lead to a violation of the principle of legality, which is a special contribution of the author to the study of this topic.

Abstract: The object of this research is the social relations that emerge in the context of participation of the prosecutor in consideration of civil cases by the courts of appeal, as well as the problematic aspects of the exercise of his powers in consideration of such cases. The author analyzes the essence of prosecutor's participation in consideration of civil cases by the courts of appeal, and the possibility of attributing such participation to one of the forms of prosecutor’s participation in consideration of civil cases by the courts. The subject of this research is the case law materials, legislative norms that regulate the indicated social relations, as well as the developed positions pertaining to the essence and separate aspects of the prosecutor's participation in consideration of civil cases by the courts of appeal. The prosecutor’s participation in the appellate instance has traditionally been the subject of research among legal scholars; this is associated to the specifics of this institution, that incorporates the elements of consideration of cases by the courts of first instance and their revision, which, in turn, generates discussions on the composition and procedure for the exercise of powers of the prosecutor participating in the appellate instance. At the same time, such research mostly dealt with participation of the prosecutor in consideration of criminal cases by the courts of appeal, while the problematic aspects of prosecutor’s participation in consideration of civil cases by the courts of appeal remained virtually unstudied, which defines the novelty of this work. The author formulates recommendations on the amendments to the current legislation on the forms of prosecutor’s participation in consideration of civil cases by the courts and the procedure for participation in consideration of civil cases by the courts of appeal, the implementation of which would allow the prosecutor’s office to achieve the goal of protection of citizens’ rights and optimization of consideration of civil cases by the courts of appeal.

Abstract: The subject of this research is the materials of the prosecutorial, law enforcement and judicial practice, norms of procedural legislation and legislation on the prosecutor's office, which regulate social relations emerged in exercising discretionary powers by the prosecutor in the context of oversight activity over execution of laws by the entities under supervision, as well as the positions formed on this matter. The object of this research is the social relations that arise in exercising discretionary powers by the prosecutor in the context of his oversight activity over execution of laws by the entities under supervision, essence, principles and limits, as well as the problems of their implementation occurring in prosecutorial activity. The study of discretionary authority of government branches lately receives increasing attention due ti the fact that limitless exercise of such authorities can invoke corruptive behavior. Examination of the questions of legal regulation of discretionary authority of the prosecutor is of prime importance as the prosecutor's office oversights the execution of laws and observance of rights of the citizens. The existing legal constructs that allow the exercise of discretion by the prosecutor are far from perfect, which causes the problems of law enforcement and violations of rights of the subjects under supervision. Therefore, the author explored the views of the scholars on the possibility of application and the scope of discretionary authority in the work of the prosecutor’s office and other government branches, effective legislation that regulates the discretionary authority of the prosecutor along with the practical aspects of its use. The novelty of this work and the author’s special contribution consist in the fact that based on the obtained results, the author offers a definition of the discretionary authority of the prosecutor, principles and limits of their application, as well as the way the legal constructs involving such authority should be structured.

Abstract: The object of this research is the questions of determination of legal status of the prosecutor participating in arbitration proceedings, and problematic aspects pertaining to exercise of his powers in reference to arbitration with a claim, as well as entering the proceedings in accordance with Part 5 of the Article 52 of the Arbitration Procedure Code of the Russian Federation. The subject of this research is the materials of prosecutorial law enforcement practice and case law, as well as the norms of arbitration procedure and civil procedure legislation. The following methods were applied in the course of this work: formal-logical, comparative analysis, comparison, analysis and synthesis, systemic and structural analysis for the purpose of studying separate elements of the legal status of the prosecutor. The author conducted a comprehensive research of the legal status of the prosecutor who participates in arbitration proceedings. A conclusion is drawn that the prosecutor’s status can be defined as a government representative in his participation in the proceeding upon the initiative, or in entering the proceedings in accordance with Part 5 of the Article 52 of the Arbitration Procedure Code of the Russian Federation. In order to determine the legal status of the prosecutor, the author analyzed the powers assigned by the Arbitration Procedure Code of the Russian Federation, as well as describes separated aspects that ate not regulated by the Arbitration Procedure Code of the Russian Federation. Recommendations are given on the improvement of legislation that establishes the mechanism of exercising powers of the prosecutor in the arbitration proceedings.

Abstract: The object of this research is the questions of determination of legal status of the prosecutor participating in arbitration proceedings, and problematic aspects pertaining to exercise of his powers in reference to arbitration with a claim, as well as entering the proceedings in accordance with Part 5 of the Article 52 of the Arbitration Procedure Code of the Russian Federation. The subject of this research is the materials of prosecutorial law enforcement practice and case law, as well as the norms of arbitration procedure and civil procedure legislation. The following methods were applied in the course of this work: formal-logical, comparative analysis, comparison, analysis and synthesis, systemic and structural analysis for the purpose of studying separate elements of the legal status of the prosecutor. The author conducted a comprehensive research of the legal status of the prosecutor who participates in arbitration proceedings. A conclusion is drawn that the prosecutor’s status can be defined as a government representative in his participation in the proceeding upon the initiative, or in entering the proceedings in accordance with Part 5 of the Article 52 of the Arbitration Procedure Code of the Russian Federation. In order to determine the legal status of the prosecutor, the author analyzed the powers assigned by the Arbitration Procedure Code of the Russian Federation, as well as describes separated aspects that ate not regulated by the Arbitration Procedure Code of the Russian Federation. Recommendations are given on the improvement of legislation that establishes the mechanism of exercising powers of the prosecutor in the arbitration proceedings.