What is the relevance of law for public regulation today? What role does the administration play in the guidance of public action? Which new stakes are set by the European Union, federalism and direct democracy for the steering of public policies? Renowned Swiss and foreign experts answer these central questions putting in prospect their proposals with the academic work of Peter Knoepfel, professor at the Swiss Graduate School of Public Administration. This book is published in Peter Knoepfel‘s honour at the occasion of his 60th birthday. These original contributions offer a current and new outline of the main debates, theoretical as well as methodological, led at the intersection between administrative sciences and policy analysis. The book is consequently addressed to all the people interested by the current and forthcoming challenges of public action and management: students in social sciences or law, researchers and academic teachers but also experts in the public sector and civil servants.