Osama Bin Laden, the only international terrorist left.
 Americans visiting  Saudi Arabia are still being warned to "maintain a high level of vigilance and  take appropriate steps to increase their security awareness to reduce their  vulnerability. Americans should maintain a low profile, vary routes and times  for all required travel, and treat mail and packages from unfamiliar sources  with suspicion. In addition, American citizens are also urged to avoid contact  with any suspicious, unfamiliar objects, and to report their presence to local  authorities. American citizens should park their motor vehicles in protected  areas with restricted access and should inspect them before using them, looking  underneath, inside the engine compartment, and inside the trunk. Use of  flashlight at night for vehicle inspection is also recommended." But there's  more to it than that. For all it's wealth and adherence of Islamic law, Saudi  Arabia still has a frontier element to it. The Saudi's are quite proud of their  Bedouin heritage, and all the freewheeling nomadic lifestyle that implied. While  the government has used generous housing and employment offers to get most  nomads to settle down, the nomad attitude still exists. Think Wild West with an  overtone of Islamic morality. Blood feuds and violent solutions to personal  problems are still common. Many of the foreigners have picked up on this  attitude. Lover's spats are sometimes settled with bombs or gunfire. Another  source of violence is the alcohol underground. Booze is prohibited in Saudi  Arabia. But most foreigners, and many Saudis, like a nip now and then. To cater  to this demand, there are always a few illegal stills or smuggling rings in  operation. Battles for market share are often violent and loud. Whenever a bomb  goes off, the police have to first figure out if the cause was criminal or  ideological. Then again, criminals have always been the cause of most terrorist