The CERN Council in December 2023 decided to terminate the International Cooperation Agreement with Russia. All MoUs between CERN and Russia will automatically terminate at the end of November 2024 and that includes the WLCG MoU. The Russian sites will therefore not be part of WLCG after that date. The same applies to Belarus, but WLCG has no MoU signed with institutes in that country. Until the end of November 2024, the situation in WLCG with respect to the Russian sites will remain unchanged. WLCG does not control nor dictate which resources should be used by the experiments. There is substantial use of opportunistic resources in the form of private facilities (i.e. HLTs), Grid sites with no MoU with WLCG, Clouds, HPCs and volunteer computing. The WLCG Management is therefore not in a position to forbid the use of Russian resources as opportunistic resources by the experiments. The WLCG Management however notes that the use of Russian resources goes against the spirit of the Council decision and strongly discourages such a use.
The CERN Council in June 2024 decided NOT to terminate the International Cooperation Agreement between CERN and JINR. JINR continues therefore being part of WLCG, providing Tier-1 services to CMS and Tier-2 services to all other experiments.