Truman Doctrine (1946); Defense Planning Guidance (1991) & The National Security Strategy (2002): the Mackinder & Spykman Dialects revisited . Rev. Esc. Guerra Nav. 2023;27(2):441-480. Acessado julho 26, 2025. https://portaldeperiodicos.marinha.mil.br/index.php/revistadaegn/article/view/4173