Book excerpt: This Commentary provides an article-by-article summary of the TEU, the TFEU, and the Charter of Fundamental Rights, offering a quick reference to the provisions of the Treaties and how they are interpreted and applied in practice. Written by a team of contributors drawn from the Legal Service of the European Commission and academia, the Commentary offers expert guidance to practitioners and academics seeking fast access to the Treaties and current practice. The Commentary follows a set structure, offering a short overview of the Article, the Article text itself, a key references list including essential case law and legislation, and a structured commentary on the Article itself. The editors and contributors combine experience in practice with a strong academic background and have published widely on a variety of EU law subjects.