British Prime Minister Gordon Brown has said, Pakistan must do more to break al-Qaeda and find Osama bin Laden. He told the BBC that eight years after the 2001 attacks on the US, nobody has been able to spot or detain or get close to the al-Qaeda leader. Mr. Brown said, Pakistan's security services must join the major effort to isolate the terrorist group. He said, more progress is needed in taking out Osama bin Laden and his number two Ayman Zawahiri.