"Strike civilians in the west without mercy using weapons of mass destruction" the video states in the 39-minute tape.
The video continues: "Attack those who attack you. Fear Allah and know that Allah is with those who fear Him."
An off camera voice invites Muslim fighters to obtain these weapons of mass destruction and shows a document on the "rules for using weapons of mass destruction against the unbelievers" written by Saudi scholar Naser Bin Hamed al-Fahd.
al-Fahd states: "They kill our people and for this reason we should also strike them with weapons of mass destruction - doing so forms part of our response to their attacks."
He continues: "We cannot stop the operations against our civilians conducted by Jews and Christians in our countries if we don't do the same thing."
al-Fahd states: "The best weapons to use are bacteriological ones. This type of barbarous weapon is used by the international community."
Just when you thought it was safe to go back into the water.