Originally banned from the UK public airwaves for fear of inciting more violence or awakening sleeper cells, Mohammad Khan’s video with its accompanying commentary by Ayman al-Zawahiri (Osama bin Laden's right-hand man) is now accessible to all.  First citing religious texts, Khan declares in a broad Yorkshire accent: "Our words have no impact upon you. Therefore I'm going to talk to you in language that you will understand. Our words are dead until we give them life with our blood." Note that the tape bears the "al-Sahab" logo, meaning "The Clouds", which is a signature of al-Qa'eda videos.