Explanation

Following Russia’s invasion of Ukraine, the European Organization for Nuclear Research (CERN) has declared that it will suspend the country’s “observer” status at its facilities and freeze new agreements with Russian scientific institutes. The 23 member states of CERN resolved to discontinue all collaboration with Russia at a meeting of the CERN Council, following a request from Ukrainian scientists. CERN also stated that it will support “initiatives to support Ukrainian collaborators and Ukrainian scientific activity in the field of high-energy physics.”