Full texts of the recent bin laden letters are available at the Guardian Unlimited Observer. They can be found here and here. The first link is the letter to America and the second is the Call to Arms that is currently being circulated in Britain. These letters, if they are in fact written by him, provide an insight into his/thier cause. Whatever else he is, he's an intelligent man that has studied global history and his religion; no matter how slanted his view and warped his interpretation.