The "Junius Pamphlet: The Crisis of Social Democracy" by Rosa Luxemburg is a significant work written in prison during World War I in 1915. In this critical document, Luxemburg addresses the imperialist power interests that drive the war and sharply criticizes the Social Democratic Party, which, instead of resisting, actively supports the war efforts. The pamphlet was illegally distributed in Germany shortly after its creation and serves as a powerful plea for peace and social justice. This edition is a reprint of the original publication from 1916 and provides valuable insight into the political and social challenges of that time. It is of interest not only to historians but also to anyone looking to engage with the development of socialist ideas and the role of social democracy.