This book analyses the remarkably close relationship between the British and Norwegian Labour parties and two of their leaders, Haakon Lie and Denis Healey, during the immediate postwar period. It examines the extent of party co-operation in disseminating anti-communist propaganda produced by Information Research Department (IRD) of the Foreign Office in London, and a separate chapter looks at the history of IRD. There are also chapters examining the extent of co-operation aimed at rebuilding the Socialist International and attempts at party collaboration over Spain. The book is largely based on unpublished material from over ten different archives in Britain, Norway, the Netherlands and Russia and also incorporates material released at the request of the author under the Freedom of Information Act in Britain.