Al-Qaida leader Osama bin Laden called for insurgents in Iraq to unite and avoid divisions in a new audiotape aired Monday on Al-Jazeera television.
"Some of you have been lax in one duty, which is to unite your ranks," bin Laden said in the audiotape. "Beware of division ... The Muslim world is waiting for you to gather under one banner."
The authenticity of the tape could not be immediately confirmed, but the voice resembled that of bin Laden in previous messages. Al-Jazeera did not say how it obtained the tape.