Try to ignore the editorializing from a typically idiotic Wired writer in the following:

During a recent briefing at the time-honored Royal United Service Institute – the oldest military think tank in the world, founded in 1831 by the Duke of Wellington – Parry imagined a future, circa 2030, in which the war on terror is still rolling along and the terrorists are winning. He describes a world so ripped up by nets and jets that sovereign nation-states like the UK are collapsing economically, politically, even physically. Then there are the people of that future, who hop from country to country and bear allegiance to none. "Globalization makes assimilation seem redundant and old-fashioned," he noted, pointing out that, rather than dissolving into the melting pot of their host nations, immigrants are increasingly maintaining their own cultural identity. Jets and nets make this possible. "Groups of people are self-contained, going back and forth between their countries, exploiting sophisticated networks and using instant communication on phones and the Internet." The result, Parry says, is "reverse colonization," in which the developing world's teeming masses conquer Western nations, as surely as the Goths sacked Rome.

It's easy to pigeonhole Parry as an isolationist – and, indeed, much of the public response to his speech came from anti-immigration wackos who said, "We knew it all along." But he has plenty of forward-thinking company in these ideas. According to a loose school of "fourth-generation warfare" theorists, connected, globe-trotting terrorists are a bigger threat to the world order than hostile nations are. The technological drivers of globalization have enabled stateless barbarians to seize the initiative. You can't keep them out by blocking the border, and the harder you smash the failed states that nurture them, the more they thrive. At the first sign of weakness, these new-wave Vandals will log on to urge their diasporic compatriots to attack you on your own soil. Failing that, they'll hop on the next flight, pick up their baggage, and sidle into Starbucks to download the latest instructions from Abu Ayyub al Masri...