92. The Appeals Chamber adopts the findings of ICTY Appeals Chamber in the Aleksovski case[1] and recalls that in the interests of legal certainty and predictability, the Appeals Chamber should follow its previous decisions, but should be free to depart from them for cogent reasons in the interests of justice. […]

104. The right of appeal is a component of the fair trial requirement[1] set out in Article 14 of the ICCPR, and Article 21(4) of the Statute. The right to a fair trial is, of course, a requirement of customary international law.[2]

105. An aspect of the fair trial requirement is the right of an accused to have like cases treated alike, so that in general, the same cases will be treated in the same way and decided as Judge Tanaka said, “possibly by the same reasoning.”[3]

106. The right to a fair trial requires and ensures the correction of errors made at trial.  At the hearing of an appeal, the principle of fairness is the ultimate corrective of errors of law and fact, but it is also a continuing requirement in any appeal in which a previous decision of an appellate body is being considered. 

113. The Appeals Chamber considers that a proper construction of the Statute requires that the ratio decidendi of its decisions is binding on Trial Chambers for the following reasons:

(i) the Statute establishes a hierarchical structure in which the Appeals Chamber is given the function of settling definitively certain questions of law and fact arising from decisions of the Trial Chambers.  Under Article 25, the Appeals Chamber hears an appeal on the ground of an error on a question of law invalidating a Trial Chamber’s decision or on the ground of an error of fact which has occasioned a miscarriage of justice, and its decisions are final;

(ii) the fundamental mandate of the Tribunal to prosecute persons responsible for serious violations of international humanitarian law cannot be achieved if the accused and the Prosecution do not have the assurance of certainty and predictability in the application of the applicable law; and

(iii) the right of appeal is, as the Chamber has stated before,[1] a component of the fair trial requirement, which is itself a rule of customary international law and gives rise to the right of the accused to have like cases treated alike.  This will not be achieved if each Trial Chamber is free to disregard decisions of law made by the Appeals Chamber, and to decide the law as it sees fit.  In such a system, it would be possible to have four statements of the law from the Tribunal on a single legal issue - one from the Appeals Chamber and one from each of the three Trial Chambers, as though the Security Council had established not a single, but four, tribunals.  This would be inconsistent with the intention of the Security Council, which, from a plain reading of the Statute and the Report of the Secretary-General, envisaged a tribunal comprising three trial chambers and one appeals chamber, applying a single, unified, coherent and rational corpus of law.  The need for coherence is particularly acute in the context in which the Tribunal operates, where the norms of international humanitarian law and international criminal law are developing, and where, therefore, the need for those appearing before the Tribunal, the accused and the Prosecution, to be certain of the regime in which cases are tried is even more pronounced.

576. [T]he Trial Chamber is said by Landžo to have violated the principles of certainty in the criminal law,[1] and of nullum crimen sine lege,[2] or ex post facto law (as it was described by counsel for Landžo).[3]  These objections are misconceived.  The law to be applied must be that which existed at the time the acts upon which the charges are based took place.  However, the subsequent identification or interpretation of that law by the Tribunal, whenever that takes place, does not alter the law so as to offend either of those principles.[4]

116. The Appeals Chamber recalls that decisions on taking judicial notice of adjudicated facts fall within the discretion of trial chambers.[1] In order to successfully challenge a discretionary decision, a party must demonstrate that the trial chamber committed a discernible error resulting in prejudice to that party.[2]

117. Rule 94(B) of the ICTY Rules provides that, at the request of a party or proprio motu, a trial chamber, after hearing the parties, may take judicial notice of adjudicated facts or documentary evidence from other proceedings of the ICTY relating to the matter at issue. Adjudicated facts are “facts that have been established in a proceeding between other parties on the basis of the evidence the parties to that proceeding chose to introduce, in the particular context of that proceeding”.[3] Judicial notice should not be taken of adjudicated facts relating to the acts, conduct, and mental state of an accused.[4]

118. It is not disputed that the practice of taking judicial notice of adjudicated facts is well-established in the jurisprudence of the ICTY and the ICTR,[5] and it is accepted as a method of achieving judicial economy while ensuring the right of an accused to a fair and expeditious trial.[6] In this respect, a number of procedural safeguards are set out in the jurisprudence,[7] which are intended to ensure that trial chambers exercise their discretion cautiously and in accordance with the rights of the accused, including the right to be presumed innocent until proven guilty pursuant to Article 21(3) of the ICTY Statute.[8]

119. […] Karadžić challenges the “constitutionality” of the practice of taking judicial notice of adjudicated facts, notwithstanding the express provision for it in the ICTY Rules.[9] The Appeals Chamber recalls that, where the respective Rules or Statute of the ICTY are at issue, it is bound to consider the relevant precedent when interpreting them.[10] This Appeals Chamber is presently being called upon to assess the propriety of decisions taken by an ICTY trial chamber, that was bound by the ICTY Rules and the ICTY Statute as well as by decisions of the ICTY Appeals Chamber.[11] Bearing this context in mind, the Appeals Chamber is guided by the principle that, in the interests of legal certainty and predictability, it should follow previous decisions of the ICTY and the ICTR Appeals Chambers and depart from them only where cogent reasons in the interests of justice exist, that is, where a previous decision has been decided on the basis of a wrong legal principle or has been “wrongly decided, usually because the judge or judges were ill‑informed about the applicable law”.[12] Therefore, in order to succeed on appeal, Karadžić must demonstrate that there are cogent reasons in the interests of justice that justify departure from jurisprudence on judicial notice of adjudicated facts.

120. The Appeals Chambers of the ICTY and the ICTR have consistently held that judicial notice of adjudicated facts is merely a presumption that may be rebutted by defence evidence at trial.[13] Judicial notice of adjudicated facts “does not shift the ultimate burden of persuasion, which remains with the Prosecution” but only relieves the Prosecution of the initial burden to produce evidence on the given point.[14]

121. The Appeals Chamber notes that the concern that accused in other cases may have focused their defence on arguing that they were not responsible for the perpetrators of crimes rather than on contesting the existence of crimes is one of the reasons why judicial notice may not be taken of adjudicated facts from other cases relating to the acts, conduct, and mental state of the accused.[15] It is, nevertheless, permissible to take judicial notice of adjudicated facts relating directly or indirectly to an accused’s guilt,[16] for example, of facts relating to the existence of a joint criminal enterprise, the conduct of its members other than the accused, and the conduct of physical perpetrators of crimes for which an accused is alleged to be criminally responsible.[17] This is as long as the burden remains on the Prosecution to establish the actus reus and the mens rea supporting the responsibility of the accused for the crimes in question by evidence other than judicial notice.[18] In addition, the discretion to accept adjudicated facts is limited by the need to ensure the accused’s right to a fair and expeditious trial.[19] Apart from disagreeing with the case law, Karadžić fails to demonstrate that there are cogent reasons in the interests of justice to depart from consistent jurisprudence of the ICTR and the ICTY on this matter.

122. The Appeals Chamber does not consider that by taking judicial notice of the existence of a crime committed by Karadžić’s alleged subordinates,[20] for example, the Trial Chamber relieved the Prosecution from proving the actus reus of the crimes charged in the Indictment. The Appeals Chamber recalls that there is a distinction between facts related to the conduct of physical perpetrators of a crime for which an accused is being alleged criminally responsible through another mode of liability and those related to the acts and conduct of the accused himself.[21] The burden remained on the Prosecution to establish by evidence other than judicial notice that Karadžić possessed the relevant mens rea and engaged in the required actus reus to be held responsible for the crimes established by way of judicial notice of adjudicated facts.  

123. Finally, the Appeals Chamber finds without merit Karadžić’s submission that judicial notice of adjudicated facts deprives an accused of the possibility that a trial chamber would reach a different conclusion had it heard the evidence itself. The Appeals Chamber recalls that adjudicated facts are not accepted as conclusive in proceedings involving parties who did not have the chance to contest them,[22] and, as noted above, are merely presumptions that may be rebutted with evidence at trial.[23]

[…]

219. The Appeals Chamber recalls that taking judicial notice of adjudicated facts or documentary evidence under Rule 94(B) of the ICTY Rules is a method of achieving judicial economy while ensuring the right of the accused to a fair, public, and expeditious trial.[24] Rule 94(B) of the ICTY Rules requires a trial chamber to hear the parties before deciding to take judicial notice.[25] Moreover, facts admitted under Rule 94(B) of the ICTY Rules are merely presumptions that may be rebutted by the defence with evidence at trial.[26] Consequently, judicial notice of adjudicated facts does not shift the ultimate burden of proof or persuasion, which remains squarely on the Prosecution.[27]

220. […] The fact that the Trial Chamber took judicial notice of considerably more adjudicated facts than in other cases does not, in itself, render the trial unfair as long as the Trial Chamber followed the procedure provided for in the ICTY Rules. In this respect, Karadžić’s comparison of the number of judicially noticed adjudicated facts in his case with other cases fails to account for factors such as the unprecedented scope and size of his own trial in relation to others.

See also paras. 221, 222.