The free market triumphalism of the 1990s is over. Early 21st century capitalism looks like Karl Marx’s description: growing extremes of wealth and poverty, and irrepressible boom-bust cycles. The centre-left clings to nationalist and bureaucratic-statist nostalgia for the social-democratic Cold War era. The far left clings to the coat-tails of the centre-left. It cannot unite itself – let alone anyone else – because it is unwilling to reinterrogate the ideas of the early Communist International, especially on the revolutionary party. To move beyond this impasse we need to re-examine critically the strategic ideas of socialists since Marx and Engels. In this book, Mike Macnair begins the task.