" ... The war against America and its allies will not be confined to Iraq," the voice on the tape said, adding that "Iraq has become a magnet for attracting and training talented fighters."

The voice, attributed to bin Laden and apparently addressing Americans said: "The new operations of al-Qaeda has not happened not because we could not penetrate the security measures. It is being prepared and you'll see it in your homeland very soon," according to the report on Al-Jazeera's website.

"It's only a matter of time," the voice said, referring to attacks. "They are in the planning stages, and you will see them in the heart of your land as soon as the planning is complete," CNN reported.