Switzerland is facing critical foreign policy challenges. Its relationship with the EU is still unsettled, the geopolitical landscape is changing rapidly, and technological innovation brings additional dynamics into play. This book provides a forward-looking guide for all those concerned with Swiss foreign policy issues, and an overview of Swiss foreign policy along its key areas. It deals, for example, with foreign trade, international financial markets, migration, environmental policy, humanitarian cooperation, and peace promotion and security policy. The contributions are written by academics and practicioners. They shed light on the respective global or regional context in which Switzerland's foreign policy operates, and analyze achievements, challenges,  opportunities, and risks as well as potential ways forward. Published on behalf of the Swiss Society for Foreign Policy. With forewords by Foreign Minister Ignazio Cassis and National Councilor Christa Markwalder, President of the Swiss Society for Foreign Policy, and contributions by: Thomas Bernauer, Fritz Brugger, Aymo Brunetti, Gilles Carbonnier, Francis Cheneval, Cedric Dupont, Katja Gentinetta, Isabel Gunther, Paula Hoffmeyer-Zlotnik, Joelle Kuntz, Sandra Lavenex, Philipp Lutz, Matthias Oesch, Pascal Sciarini, Charlotte Sieber-Gasser, Cedric Tille, Andreas Wenger, Achim Wennmann, Sacha Zala. The German version of «A Swiss Foreign Policy for the 21st Century» is available as «Eine Aussenpolitik für die Schweiz im 21. Jahrhundert».