This book provides the first comprehensive discussion of conflicts between legal bases in EU law. It fills an important gap in the existing literature on the choice of legal basis in EU law by analysing the structure of legal bases and the resulting legal basis litigation in the European Union, thus identifying areas of conflict produced by overlapping competences, divergent inter-institutional interests, and inconsistencies in the courts’ judgements. While certain cases have been discussed extensively in academic literature (e.g. Tobacco Advertising, ECOWAS), there has been little analysis of the general underlying criteria and principles governing the choice of legal basis on the part of European institutions. Such an analysis has, however, become necessary in order to better understand and possibly predict judicial outcomes, and to identify flaws in the current legislative framework.

General average is considered to be one of the most uniformly regulated topics of maritime law. This study concludes that this perception is flawed. The invariably applicable York-Antwerp Rules do not provide a full regime, whereas their applicability is generally contractual only. As a result, questions arise as to which law applies to general average obligations, how the applicable national law is to be determined (taking into consideration the impact of the European Rome I and II Regulations), and what is provided in the national regimes. In addition, questions arise as to what the influence is of contractual provisions set out in contracts for the carriage of goods by sea and general average security forms, and how the various sources interact. This study contains an in depth assessment of these questions.

The Common Foreign and Security Policy (CFSP) of the European Union is a highly exceptional component of the EU legal order. This constitutionalised foreign policy regime, with legal, diplomatic, and political DNA woven throughout its fabric, is a distinct sub-system of law on the outermost sphere of European supranationalism. When contrasted against other Union policies, it is immediately clear that EU foreign policy has a special decision-making mechanism, making it highly exceptional. In the now depillarised framework of the EU treaties, issues of institutional division arise from the legacy of the former pillar system. This is due to the reality that of prime concern in EU external relations is the question of 'who decides?' By engaging a number of legal themes that cut across foreign affairs exceptionalism, executive prerogatives, parliamentary accountability, judicial review, and the constitutionalisation of European integration, the book lays bare how EU foreign affairs have become highly legalised, leading to ever-greater coherence in how Europe exerts itself on the global stage. In this first monograph dedicated exclusively to the law of the EU's Common Foreign and Security Policy in modern times, the author argues that the legal framework for EU foreign affairs must adapt in a changing world so as to ensure the EU treaties can cater for a more assertive Europe in the wider world. Cited in Opinion of Advocate General Evgeni Tanchev, Case C-730/18 P, SC v Eulex Kosovo, ECLI:EU:C:2020:176, Court of Justice of the European Union (First Chamber), 5 March 2020; Opinion of Advocate General Gerard Hogan, Case C-134/19 P, Bank Refah Kargaran v Council of the European Union, ECLI:EU:C:2020:396, Court of Justice of the European Union (Grand Chamber), 28 May 2020; Opinion of Advocate General Evgeni Tanchev, Case C-283/20, CO, ME, GC and 42 Others v MJ (Head of Mission), European Commission, European External Action Service (EEAS), Council of the European Union, Eulex Kosovo, ECLI:EU:C:2021:781, Court of Justice of the European Union (Fifth Chamber), 30 September 2021; and, Opinion of Advocate General Tamara Capeta in Joined Cases C-29/22 P and C-44/22 P, KS, KD v Council of the European Union, European Commission, and European External Action Service (EEAS), and European Commission v KS, KD, Council of the European Union, and European External Action Service (EEAS), ECLI:EU:C:2023:901, Court of Justice of the European Union (Grand Chamber), 23 November 2023.

Since the 1957 Rome Treaty, the European Union has changed dramatically - in terms of its composition, scope and depth. Originally established by six Western European States, the EU today has 28 Members and covers almost the entire European continent; and while initially confined to establishing a "common market", the EU has come to influence all areas of political, economic and social life. In parallel with this enormous geographic and thematic expansion, the constitutional and legislative principles underpinning the European Union have constantly evolved. This three-volume study aims to provide an authoritative academic treatment of European Union law. Written by leading scholars and practitioners, each chapter offers a comprehensive and critical assessment of the state of the law. Doctrinal in presentation, each volume nonetheless tries to present a broader historical and comparative perspective. Volume I provides an analysis of the constitutional principles governing the European Union. It covers the history of the EU, the constitutional foundations, the institutional framework, legislative and executive governance, judicial protection, and external relations. Volume II explores the structure of the internal market, while Volume III finally analyses the internal and external substantive policies of the EU.