Chapter Five explores planning, debates, and rhetoric about postwar civil aviation during the Second World War in Britain and the United States. As well as public rhetoric, it focuses on discussions at the 1944 Chicago conference on international aviation, and in state committees and internationalist organizations such as the Council on Foreign Relations (in the USA) and Chatham House (in Britain). The internationalism surrounding aviation was powerful enough, it argues, to manifest in a wide variety of visions for postwar aviation. This internationalism was not monolithic: the chapter emphasizes its fractured and contested nature by exploring the intermingling of political, commercial, and national interests within differing internationalist proposals. Although in both countries internationalists continued to see the aeroplane as a globalizing machine of prosperity, their proposals were also designed to safeguard national commercial interests. In Britain, a postwar aerial regime managed by a powerful international organization (the Labour Party’s policy pamphlet on the subject was titled 'Wings for Peace') was to safeguard British aviation and forestall the spread of US aviation around the world. In the United States, on the other hand, most internationalists joined state officials and the aviation industry in a consensus that global nature of aviation necessitated minimal regulation, a freedom of the air.