Zawahiri not a bin Laden: US
Washington - Ayman al-Zawahiri, the Egyptian surgeon long considered al-Qaeda's number two, "is not anywhere near the leader that Osama bin Laden was," a top White House official said on Sunday.
"Our assessment is that he is not anywhere near the leader that Osama bin Laden was," White House National Security Advisor Tom Donilon told NBC's Meet The Press show.
The terror network responsible for the September 11 terror attacks on the United States has vowed to avenge the US killing of bin Laden.
"They as an organisation will have to work themselves through some sort of succession," Donilon said.
Killing bin Laden, he said, was "a real blow".