Book excerpt: Policy action is driven, shaped and regulated by the ways in which cognitive frames and interests shape and define issues and analyses - and the involvement of particular authorities, experts, problem-definitions and solutions. To understand these processes is particularly important in the realm of democratic policymaking, where agents driven by divergent interests and alternative principles struggle to preserve or reform policy, law, and institutions. This book analyzes continuity and change in EU policy and provides a systematic understanding of the interactions between ideas, organized actors, and institutions in political, administrative and related social processes. The EU policy studies make up a rich empirical territory, ranging from food security and chemicals to energy, climate change, and gender.