PRAGUE -- Five years have passed since the terrorist attacks on New York and Washington of September 2001, yet it seems that policymakers have learned little about how terrorist cells operate, and what their weaknesses are. The Bush administration still uses the phrase "war on terror" and behaves as though it really is a war, the ordinary kind where one government fights another.

After five years of military exertions, strategies based on targeting a united aggressor have only made the situation worse. It is time to understand the new, emerging model of conflict.

In order to make the "war" paradigm fit, the Bush administration alludes to al-Qaida as a centrally directed enemy. In fact, there is now no master planner or funder of terrorist activities. The Madrid, London, and Bali attacks, as well as several thwarted operations in the United States and Britain, were all characterized by their dispersed organization. Independently generated plots emerged and used ad hoc resources, often within the target country.