Book excerpt: This edition offers fresh analysis and insight into; Fundamental shifts in the global energy balance; The revolution in shale gas and oil; New energy frontiers, from ultra deepwater to the Arctic; The rising agenda of safety concerns across the energy complex; Energy poverty; Infrastructure for modernizing power grids; Climate security in the current political and economic environmentThe contributors offer a lively discussion of the challenges and opportunities presented by these changes and how they affect national security and regional politics around the globe.