Al Qaeda - more cash than the banks?

This won’t exactly be popular with the FBI, but the terrorist organization Al Qaeda is awash in funds. Anti-terrorism efforts to expunge Al Qaeda from the worldwide banking system mean it is sheltered from the rest of the world’s economic troubles. Al Qaeda’s principle source of funding is $800 million derived from the opium and cannabis trade. Its money-handling methods may be simple—they include moving cash by hand—but then isn’t it complexity that got Western banks into trouble in the first place?