All leaders are constrained by geography. Their choices are limited by mountains, rivers, seas and concrete. Yes, to follow world events you need to understand people, ideas and movements – but if you don't know geography, you'll never have the full picture.
If you've ever wondered why Putin is so obsessed with Crimea, why the USA was destined to become a global superpower, or why China's power base continues to expand ever outwards, the answers are all here.
It's time to put the 'geo' back into geopolitics.