This book offers a comprehensive political assessment of Brexit. Based on a historical review of the role of the United Kingdom in the European Union, the author, a former diplomat at the German embassy in London, presents well-founded insights into arguments in favor and against the Brexit deal and the status quo of the Brexit negotiations. Furthermore, the book discusses the consequences of Brexit - for the UK and the rest of the EU, for security in Europe, and for the transatlantic relationship, as well as for global trade relations and the competitiveness of Europe and the UK.