"The decision to end the cooperation agreement was taken in December 2023 when CERN's Council passed a resolution "to terminate the International Cooperation Agreement between CERN and the Russian Federation, together with all related protocols and addenda, with effect from 30 November 2024; To terminate ... all other agreements and experiment memoranda of understanding allowing the participation of the Russian Federation and its national institutes in the CERN scientific programme, with effect from 30 November 2024; AFFIRMS That these measures concern the relationship between CERN and Russian and Belarusian institutes and do not affect the relationship with scientists of Russian nationality affiliated with other institutes." The cooperation agreement with Belarus will come to an end on 27 June, before the Russian one ends."