its policies by mounting a large and systematic campaign of official propaganda. Within days of the declaration of war, Asquith asked Charles Masterman (a member of the cabinet and chairman of the National Health Insurance Commission) to initiate such a campaign, and Masterman set up his largely secret organization at Wellington House - the London headquarters of the Insurance Commission. To begin with Masterman and his colleagues were exclusively concerned with neutral and allied opinion abroad, but by 1917 domestic enthusiasm for the war had begun to wane, and they turned their attention to public opinion at home as well. Indeed, in the last two years of the war, they also sought to influence public opinion in enemy countries as well. As the scale of official propaganda increased, the government twice took the