1 January – Croatia adopted the euro and became the 20th member state of the eurozone.[1] They entered the Schengen area and became the 23rd European union member to do so, and the 27th states to accede to the union overall [2]
25 April – The Carbon Border Adjustment Mechanism, a carbon tariff on carbon-intensive products imported to the European Union from countries lacking sufficient greenhouse gas reduction measures of their own, a key part of the Fit for 55 package, is approved.[4][5]
News: Wax . Eddy . Barigazzi . Jacopo . Jochecová . Ketrin . European socialists suspend Robert Fico’s Smer party and its ally Hlas . 12 October 2023 . 12 October 2023 . 12 October 2023 . https://web.archive.org/web/20231012163715/https://www.politico.eu/article/european-socialists-suspent-robert-fico-smer-hlas-party/ . live .