Washington: Two of Al Qaeda's spiritual leaders have admitted that the Islamic State (IS) has gotten the better of the terror outfit, with it barely functioning after losing money and manpower to its rapidly rising adversary.

While pointing out that the terror group now lacked 'organisational structure,' Abu Qatada and Abu Muhammad Al Maqdisi said that Al Qaeda leader Ayman Al Zawahiri was isolated from his top lieutenants and operated solely on the basis of allegiance, reported Fox News.