Sovereignty and Command in Canada–US Continental Air Defence, 1940–57The 1940 Ogdensburg Agreement entrenched a formal defence relationship between Canada and the United States. But was Canadian sovereignty upheld? Drawing on untapped archival material, Sovereignty and Command in CanadaUS Continental Air Defence, 194057 documents the close and sometimes fractious relationship between the two countries. Richard Goette challenges prevailing perceptions that Canadas defence relationship with the United States eroded