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Volume 12, Number 2 of JANUS.NET, e-journal of international relations presents twelve scientific articles evaluated in double blind peer review and a Note or Reflection. The thematic diversity is highlighted. The results of various research studies are presented, either conceptual and theoretical, or guided by case studies on leadership, diplomacy, external intervention and defense, the role of civil society in promoting development, tourism and regional economic mechanisms. In this issue, the case studies relate to the African continent (Mali, Cabo Verde, São Tomé and Príncipe, Mozambique and Zanzibar) with links to the Asian continent (Bab el Mandeb Strait), Latin America (Bolivia) and Europe.