The United Kingdom triggered formal legal proceedings against the European Union on Aug. 16 for blocking its access to the bloc's key science and research programs, including Horizon Europe, Copernicus and Euratom, DW News reported Aug. 17. British Foreign Secretary Liz Truss, the leading candidate to become the United Kingdom's next prime minister, said this blocked access breached the post-Brexit U.K.-EU Trade and Cooperation Agreement (TCA).