Ayman al-Zawahiri, al-Qaeda's second in command, has issued a eulogy for Osama bin Laden, saying the slain group's chief terrified the US when he was alive and would continue to do so in death.
Al-Zawahiri appeared in a white Arab robe and turban, a Kalashnikov at his side, in a 28-minute video posted on jihadist online forums on Wednesday.
