“Truman Doctrine (1946); Defense Planning Guidance (1991) & The National Security Strategy (2002): The Mackinder & Spykman Dialects Revisited ”. Revista da EGN 27, no. 2 (julho 4, 2023): 441–480. Acessado julho 26, 2025. https://portaldeperiodicos.marinha.mil.br/index.php/revistadaegn/article/view/4173.