The latest design from al Qaeda's top bomb maker is a "belly bomb" developed to beat airport security in Europe and the Middle East where full body scanners are not widely used, according to U.S. officials. A bulletin from the Department of Homeland Security warned, "DHS has identified a potential threat from terrorists who may surgically implant explosives or explosive components in humans to conduct terrorist attacks." According to U.S. officials, the terrorist would detonate the bomb with a chemical-filled syringe. "We do not think there would be enough to bring down a jetliner, but it is more likely the...