Prisoners of geography

All leaders are constrained by geography. Their choices are limited by mountains, rivers, seas and concrete. Yes, to understand world events you need to understand people, ideas and movements - but if you don't know geography, you'll never have the full picture. To understand Putin's actions, for example, it is essential to consider that, to be a world power, Russia must have a navy. And if its ports freeze for six months each year then it must have access to a warm water port - hence, the annexation of Crimea was the only option for Putin. To understand the Middle East, it is crucial to know…