The US President-elect, Barack Obama, has said Al Qaeda and its leader Osama bin Laden, the most wanted terrorists of the world, are the number one threat to the United States of America.

"I haven't changed my mind, that bin Laden and Al Qaida are our number one threat when it comes to American security," Obama told reporters yesterday after a new voice recording emerged from the terror group's leader warning the president-elect of new fronts in bin Laden's self-styled holy war against Western interests.