It is the latest development of a saga that began in late 2022 when an updated version of the FIA's International Sporting Code included a new Article 12.2.1.n.
This states that drivers will be in breach of the rules if they show "the general making and display of political, religious and personal statements or comments notably in violation of the general principle of neutrality promoted by the FIA under its Statutes, unless previously approved in writing by the FIA for International Competitions, or by the relevant ASN for National Competitions within their jurisdiction".
