Rush Hour Terror: Viewpoints: Why Iraq Has Made Us Less Safe ...

We may learn that the London bombers were, like the Madrid crew, a bunch of self-starter terrorists with few or no ties to bin Laden. U.S. and partner intelligence services have done such a good job running to ground members of the original group that there may be no connection with the remnants of al-Qaeda's command on the Afghanistan-Pakistan border. We may also learn that the killers belong to a network being built by Abu Mousab al-Zarqawi, who has emerged in Iraq as bin Laden's heir apparent.

Or we may find that the bombings were engineered by returnees from Iraq. Muslims from Britain, France, Germany and elsewhere--along with several thousand from Arab countries--have traveled to Iraq to fight in what has become a theater of inspiration for the jihadist drama of faith. A handful are known to have trickled back to Europe already. Western intelligence services fear that more are on the way and will pose a bigger danger than the returnees from Afghanistan in the 1980s and '90s, the global jihad's first generation of terrorists. The anxiety is justified; the fighters in Iraq are, as the CIA has observed, getting better on-the-job training than was available in al-Qaeda's camps in Afghanistan.

Britain has been on al-Qaeda's target list since the group's earliest days in the 1990s; the country's appointment with terror was ensured. But now, because of the invasion of Iraq, it faces a longer and bloodier confrontation with radical Islam, as does the U.S. America has shown itself to be good at hunting terrorists. Unfortunately, by occupying Iraq, it has become even better at creating them.

Benjamin is co-author of The Next Attack: The Failure of the War on Terror and a Strategy for Getting It Right, to be published this fall