CELEX:62018CJ0644: Judgment of the Court (Grand Chamber) of 10 November 2020.#European Commission v Italian Republic.#Failure of a Member State to fulfil obligations – Environment – Directive 2008/50/EC – Ambient air quality – Article 13(1) and Annex XI – Systematic and persistent exceedance of limit values for microparticles (PM10) in certain Italian zones and agglomerations – Article 23(1) – Annex XV – Exceedance period to be ‘as short as possible’ – Appropriate measures.#Case C-644/18.