“The Communist Movement at a Crossroads is a vital edition to our understanding of the International Communist movement at its revolutionary height.”—Chris James Newlove, Marx & Philosophy Review of Books“To John Riddell and Mike Tabor we owe a tremendous debt. These volumes, and all in the series, are the result of meticulous research and investigation, a model of clarity. That it was clearly a labour of love, it cannot be denied.”—Chris Bambery, Counterfire “Riddell has devoted most of his life to bringing the documents of the early Communist International to wider audiences [...] Thus this is the latest volume in what has been a titanic political achievement in research and translation.”—Kenny Coyle, Morning Star