The US states:
> The ICC was established by its state parties as a court of limited jurisdiction. Those limits are rooted in principles of complementarity, which do not appear to have been applied here amid the Prosecutor’s rush to seek these arrest warrants rather than allowing the Israeli legal system a full and timely opportunity to proceed.[0]
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The ICC defines:
> 1. Complementarity: The principle of complementarity governs the exercise of the Court’s jurisdiction. This distinguishes the Court in several significant ways from other known institutions, including the international criminal tribunals for the former Yugoslavia and Rwanda (the ICTY and the ICTR). The Statute recognizes that States have the first responsibility and right to prosecute international crimes. The ICC may only exercise jurisdiction where national legal systems fail to do so, including where they purport to act but in reality are unwilling or unable to genuinely carry out proceedings. The principle of complementarity is based both on respect for the primary jurisdiction of States and on considerations of efficiency and effectiveness, since States will generally have the best access to evidence and witnesses and the resources to carry out proceedings. Moreover, there are limits on the number of prosecutions the ICC, a single institution, can feasibly conduct.[1]
namely,
> The ICC may only exercise jurisdiction where national legal systems fail to do so, including where they purport to act but in reality are unwilling or unable to genuinely carry out proceedings.
The US argues that the ICC has not adequately allowed this process to play out through the courts in Israel.
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The Jerusalem Center for Public Affairs states:
> The criteria of unwillingness or inability to carry out proceedings would involve some indication of purposely shielding the accused from criminal responsibility or a lack of intent to bring the person to justice. This may be inferred from political interference or deliberate obstruction and delay, from institutional deficiencies due to political subordination of the legal system, or procedural irregularities indicating a lack of willingness and inability to investigate or prosecute genuinely.[2]
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Imo the hermeneutics are clear, though it will be up to the lawyers from either side to make arguments in favor of/against.
[0]: https://www.state.gov/warrant-applications-by-the-internatio...
[1]: https://www.icc-cpi.int/sites/default/files/NR/rdonlyres/20B...
[2]: https://jcpa.org/article/would-judicial-reforms-in-israel-op....