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Monday, January 31, 2011

The Urban Terrorists are already here - Part 1

For the first time in history, announced researchers this May, a majority of the world’s population is living in urban environments. Cities—efficient hubs connecting international flows of people, energy, communications, and capital—are thriving in our global economy as never before. However, the same factors that make cities hubs of globalization also make them vulnerable to small-group terror and violence.

Over the last few years, small groups’ ability to conduct terrorism has shown radical improvements in productivity—their capacity to inflict economic, physical, and moral damage. These groups, motivated by everything from gang membership to religious extremism, have taken advantage of easy access to our global superinfrastructure, revenues from growing illicit commercial flows, and ubiquitously available new technologies to cross the threshold necessary to become terrible threats. September 11, 2001, marked their arrival at that threshold.

Unfortunately, the improvements in lethality that we have already seen are just the beginning. The arc of productivity growth that lets small groups terrorize at ever-higher levels of death and disruption stretches as far as the eye can see. Eventually, one man may even be able to wield the destructive power that only nation-states possess today. It is a perverse twist of history that this new threat arrives at the same moment that wars between states are receding into the past. Thanks to global interdependence, state-against-state warfare is far less likely than it used to be, and viable only against disconnected or powerless states. But the underlying processes of globalization have made us exceedingly vulnerable to nonstate enemies. The mechanisms of power and control that states once exerted will continue to weaken as global interconnectivity increases. Small groups of terrorists can already attack deep within any state, riding on the highways of interconnectivity, unconcerned about our porous borders and our nation-state militaries. These terrorists’ likeliest point of origin, and their likeliest destination, is the city.

Cities played a vital defensive role in the last major evolution of conventional state-versus-state warfare. Between the world wars, the refinement of technologies—particularly the combustion engine, when combined with armor—made it possible for armies to move at much higher speeds than in the past, so new methods of warfare emphasized armored motorized maneuver as a way to pierce the opposition’s solid defensive lines and range deep into soft, undefended rear areas. These incursions, the armored thrusts of blitzkrieg, turned an army’s size against itself: even the smallest armored vanguard could easily disrupt the supply of ammunition, fuel, and rations necessary to maintain the huge armies of the twentieth century in the field.

To defend against these thrusts, the theoretician J. F. C. Fuller wrote in the 1930s, cities could be used as anchor or pivot points to engage armored forces in attacks on static positions, bogging down the offensive. Tanks couldn’t move quickly through cities, and if they bypassed them and struck too deeply into enemy territory, their supply lines—in particular, of the gasoline they drank greedily—would become vulnerable. The city, Fuller anticipated, could serve as a vast fortress, requiring the fast new armor to revert to the ancient tactic of the siege. That’s exactly what happened in practice during World War II, when the defenses mounted in Leningrad, Moscow, and Stalingrad played a major role in the Allied victory.

But in the current evolution of warfare, cities are no longer defensive anchors against armored thrusts ranging through the countryside. They have become the main targets of offensive action themselves. Just as the huge militaries of the early twentieth century were vulnerable to supply and communications disruption, cities are now so heavily dependent on a constant flow of services from various centralized systems that even the simplest attacks on those systems can cause massive disruption.

Most of the networks that we rely on for city life—communications, electricity, transportation, water—are overused, interdependent, and extremely complex. They developed organically as what scholars in the emerging field of network science call “scale-free networks,” which contain large hubs with a plethora of connections to smaller and more isolated local clusters. Such networks are economically efficient and resistant to random failure—but they are also extremely vulnerable to intentional disruptions, as Albert-Laszlo Barabasi shows in his important book Linked: The New Science of Networks. In practice, this means that a very small number of attacks on the critical hubs of a scale-free network can collapse the entire network. Such a collapse can occasionally happen by accident, when random failure hits a critical node; think of the huge Northeast blackout of 2003, which caused $6.4 billion in damage.

Further, the networks of our global superinfrastructure are tightly “coupled”—so tightly interconnected, that is, that any change in one has a nearly instantaneous effect on the others. Attacking one network is like knocking over the first domino in a series: it leads to cascades of failure through a variety of connected networks, faster than human managers can respond.

The ongoing attacks on the systems that support Baghdad’s 5 million people illustrate the vulnerability of modern networks. Over the last four years, guerrilla assaults on electrical systems have reduced Baghdad’s power to an average of four or five hours a day. And the insurgents have been busily finding new ways to cut power: no longer do they make simple attacks on single transmission towers. Instead, they destroy multiple towers in series and remove the copper wire for resale to fund the operation; they ambush repair crews in order to slow repairs radically; they attack the natural gas and water pipelines that feed the power plants. In September 2004, one attack on an oil pipeline that fed a power plant quickly led to a cascade of power failures that blacked out electricity throughout Iraq.

Lack of adequate power is a major reason why economic recovery has been nearly impossible in Iraq. No wonder that, in account after account, nearly the first criticism that any Iraqi citizen levels against the government is its inability to keep the lights on. Deprived of services, citizens are forced to turn to local groups—many of them at war with the government—for black-market alternatives. This money, in turn, fuels further violence, and the government loses legitimacy.

Insurgents have directed such disruptive attacks against nearly all the services necessary to get a city of 5 million through the day: water pipes, trucking, and distribution lines for gasoline and kerosene. And because of these networks’ complexity and interconnectivity, even small attacks, costing in the low thousands of dollars to carry out, can cause tens of millions and occasionally hundreds of millions of dollars in damage.

Iraq is a petri dish for modern conflict, the Spanish Civil War of our times. It’s the place where small groups are learning to fight modern militaries and modern societies and win. As a result, we can expect to see systems disruption used again and again in modern conflict—certainly against megacities in the developing world, and even against those in the developed West, as we have already seen in London, Madrid, and Moscow.

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