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Chapter

Cover UK Politics

2. The Cabinet and the prime minister  

This chapter examines two closely connected institutions that lie at the epicentre of UK politics and these are the Cabinet and the Prime Minister (PM). The chapter considers the basic characteristics of both. It describes the way in which they operate, including policy, the functions of the Prime Ministerial role, the supporting staff, and the place of both in the UK constitution and system of government. The principle of the collective responsibility of ministers is touched upon. The chapter gives some practical examples of how selective PMs have worked with their Cabinets to demonstrate how these theories can play out in practical terms. The chapter also provides historical material to illuminate the background to the issues it considers. Finally, the chapter asks: is collective government, that is, government by a group rather than a single leader, the right approach for the UK today? The chapter also touches on the issue of Brexit and questions what we have learnt from the Brexit experience in terms of the UK political system.

Chapter

Cover The Politics of International Law

5. Compliance and enforcement in international law  

This chapter assesses why international legal obligations are (or are not) complied with, and how they are (or are not) enforced. It begins by drawing a distinction between laws and norms. The chapter then examines the main explanations for international law compliance put forward by both international law and international relations scholars. These may be broadly grouped into two categories: instrumentalist explanations and normative explanations. The chapter also discusses the concept of state responsibility—that is, the body of rules governing when and how states may be held liable for violations of international law. International law-enforcement is indelibly shaped by the condition of international anarchy. According to the concept of self-help, an injured state may, under certain circumstances, unilaterally take countermeasures against the guilty party. Such measures may include sanctions, though these may also be ordered by the UN Security Council as a collective security measure. The international legal system also increasingly makes use of judicial procedures that approximate those found within states. In this connection, the chapter considers the role of courts and tribunals in adjudicating disputes and promoting compliance with international law.