Currently, scholars and political leaders are facing various global challenges: failing states, conflicts over distribution, terrorism and the refugee crisis represent only some of them. In this book, acclaimed experts from Germany and abroad offer a panorama of the international security threats of the 21^st century. With a particular focus on the role of Germany, these experts present strategic approaches through which these challenges can be tackled in the most effective and sensible way, thus providing new impulses for the security policy debate in Germany.