One of my main areas of interest is financial risk and in particular how markets and their participants behave.
To have any serious understanding of this it is also necessary to have an idea of the forces that act on markets, of which geo-politics is a major factor. To that end I have found these three books both fascinating and illuminating.
The Power of Geography: Ten Maps that Reveal the Future of Our World by Tim Marshall
Material World: A Substantial Story of Our Past and Future by Ed Conway
End Times: Elites, Counter-Elites and the Path of Political Disintegration by Peter Turchin