A/HRC/34/63 Resolution of the Conflict in the Republic of South Sudan provide for full authority for the establishment of the hybrid court for South Sudan in lieu of an agreement with the Government if necessary, the African Union should act immediately to ensure that the hybrid court is operational within six to nine months of the present report 96. The Commission recommends the immediate establishment of an international impartial and independent investigation by the United Nations into the most serious crimes, including conflict-related sexual violence, committed since December 2013 by, inter alia, collecting, preserving and analysing evidence of human rights violations and violations of international humanitarian law. The aim of the investigation should be to facilitate and expedite fair and independent criminal proceedings in accordance with international law standards. It should also support criminal proceedings before the hybrid court for South Sudan and national, regional or international courts or tribunals that have, or in the future have, jurisdiction over these crimes. The Commission urges the parties concerned to prioritize the investigation and documentation of conflict-related sexual violence. 21