"Our goals have been the Americans ... and the oil targets which they are stealing to gain power to strike the mujahideen and Muslims."

"There was a setback in work there for reasons that there is no room to state now, but as of late, efforts have been united and there is unity around a single leader."

Abu al-Yazid, also known as Abu Saeed al-Masri, said al Qaeda will continue "with large scale operations against the enemy" -- by which he meant the United States.

"We have demanded and we demand that all branches of al Qaeda carry out such operations," he said, referring to attacks against U.S.-led forces in Iraq and Afghanistan.

The militant leader said al Qaeda would be willing to accept a truce of about 10 years' duration with the United States if Washington agreed to withdraw its troops from Muslim countries and stopped backing Israel and the pro-Western governments of Muslim nations.

Asked about the whereabouts of al Qaeda's top leaders, he said: "Praise God, sheikh Osama (bin Laden) and sheikh Ayman al-Zawahri are safe from the reach of the enemies, but we would not say where they are; moreover, we do not know where they are, but we're in continuous contact with them."