Al Qaeda leader Osama bin Laden was well and reports speculating about his sickness were false, his deputy Ayman al-Zawahri said in a recording on Wednesday.
"Sheikh Osama bin Laden is in good health," Zawahri, who is also a doctor, said in response to questions compiled by Islamist Web sites. "The ill-intentioned always try to circulate false reports about him being sick."
Zawahri, who, like Saudi-born bin Laden is believed to be hiding in Afghanistan or Pakistan, also denounced the United Nations and vowed to attack Jews both within and outside Israel.
"The United Nations is an enemy of Islam and Muslims," he said. "It has legalised the creation of the state of Israel and its seizure of Muslims' land ... it has legalised the crusader presence in Afghanistan ... and Iraq," he said in a 104-minute audio recording posted on the Internet.
He defended attacks on U.N. offices in an apparent reference to twin bomb attacks on U.N. buildings in Algiers which killed 41 people in December and the 2003 bombing of a U.N. building in Baghdad which killed 22.
Zawahri also called for attacks on Jews. "We promise our Muslim brothers that we will do our utmost to strike Jews in Israel and abroad with help and guidance from God."
Al Qaeda will turn to fight Israel after "winning" the war in Iraq against U.S.-led and government forces, he said, adding that the United states had begun to collapse.
"The myth of unipolar world is over. The (September 11, 2001) strikes on New York and Washington are identifying marks of this collapse, but empires do not collapse in a minute and could take decades. The collapse of the Soviet Union is the closest example."
The Egyptian militant also reiterated al Qaeda calls to Muslims to topple Western-allied governments and to attack Western and Israeli interests in Muslim countries.
