Ben Richardson, « Geopolitics and the British Empire: Halford Mackinder’s Liberal Imperialism », E-International Relations, 21 mars 2021. https://www.e-ir.info/2021/03/21/geopolitics-and-the-british-empire-halford-mackinders-liberal-imperialism/
Ben Richardson, « Geopolitics and the British Empire: Halford Mackinder’s Liberal Imperialism », E-International Relations, 21 mars 2021. https://www.e-ir.info/2021/03/21/geopolitics-and-the-british-empire-halford-mackinders-liberal-imperialism/
Géostratégie 