This is really a great book. I've read half of it now -- quick, fast-paced, the author (a young German resource-war journalist) traveled by car and other means, from Baku to Georgia, Astana, into Xinjiang, Iran, Afghanistan, in search of the politics of pipelines -- and simply recounts all the things he saw and people he spoke to. Illuminating and fun.
The book is about 4 years old, and there are a few points (but only a few) where events have either confirmed (Georgia) or confuted (Kashagan, where he bought the line that the Khazaks might be pumping 10 mmbo/d by 2020) his fears/hopes -- but even these examples are illuminating.
(Central Asia, Pakistan, Afghanistan, Caspian Oil, pipelines, resource wars/terror wars -- written by journalist who traveled from Baku to Western China... shadowing the warlords, Oil execs, etc...)