John Arquilla

New technologies are changing how we protect our citizens and wage our wars. Among militaries, everything taken for granted about the ability to manoeuvre and fight is now undermined by vulnerability to weapons of mass disruption: cutting-edge computer worms, viruses, and invasive robot networks. At home, billions of household appliances and other "smart" items that form the Internet of Things...

Since the end of World War II, the United States has been the world's pre-eminent military power. Yet it has suffered as much failure as it has experienced victory. The bloody stalemate in Korea, defeats in Vietnam and Afghanistan, and difficulties fighting Iraqi insurgents reflect persistent problems with US military strategy. Beyond these conflicts, soldiers and civilian analysts have flirted,...