On 14 July 1889, the centenary of the French Revolution, socialist parties from all corners of Europe met in Paris. On the same day in the same city, the Exposition Universelle was launched to mark the achievements of capitalist production. The two events symbolized the beginning of the epic struggle between socialism and capitalism in Europe.; In this comprehensive study of a century of socialism, the author traces the fortunes of the political parties of the Left in Western Europe. From the rise of the Bolsheviks to the fall of the Berlin wall, from the Second International through two world wars to the Cold War and the birth of the welfare state, from the working class militancy and student uprisings of the 1960s, through the revival of feminism and the arrival of "green" politics, to the reluctant embrace of market economics en route to the millennium, Donald Sassoon charts the course of socialism across 14 countries.; He shows that throughout their history the fortunes of socialism and capitalism have been inextricably linked. They have grown up side by side, each one challenging and seeking to destroy, yet nourishing and shaping the other.

This volume offers a new perspective on the political history of the socialist, communist and alternative political Lefts, focusing on the role of networks and transnational connections. Embedding the history of left-wing internationalism into a new political history approach, it accounts for global and transnational turns in the study of left-wing politics. The essays in this collection study a range of examples of international engagement and transnational cooperation in which left-wing actors were involved, and explore how these interactions shaped the globalization of politics throughout the 20th century. In taking a multi-archival and methodological approach, this book challenges two conventional views - that the left gradually abandoned its original international to focus exclusively on the national framework, and that internationalism survived merely as a rhetorical device. Instead, this collection highlights how different currents of the Left developed their own versions of internationalism in order to adapt to the transformation of politics in the interdependent 20th-century world. Demonstrating the importance of political convergence, alliance-formation, network construction and knowledge circulation within and between the socialist and communist movements, it shows that the influence of internationalism is central to understanding the foreign policy of various left-wing parties and movements.

Current divergence from traditional Leninist orthodoxy is attributed to such phenomena as nuclear warfare, continued Western prosperity and the Sino-Soviet split, according to this systematic analysis of Soviet foreign policy.