LONDON, England (AP) -- Despite losses around the world, al Qaeda has more than 18,000 potential terrorists, and its ranks are growing because of the conflict in Iraq, a leading think tank warned Tuesday. Al Qaeda still has a functioning leadership despite the death or capture of key figures, and estimates suggest al Qaeda operates in more than 60 nations around the world, the International Institute of Strategic Studies said in its Strategic Survey 2003-4. The terrorist group poses a growing threat to Western interests and attacks are likely to increase, the institute said. "Al Qaeda must be expected to...