Al Qaeda on Friday issued a videotape paying tribute to those killed during last year's military operation against Lal Masjid in Islamabad. The tape, which includes messages of Osama Bin Laden, Ayman Al Zawahiri and Abu Yahya Al Abbi, was sent to Ary One World TV on the completion of one year of the Operation Silence. Al Qaeda leaders in the tape have called Ghazi Abdul Rasheed, the slain deputy prayer leader of the mosque, the "Imam-e-Ummat". Leaders of religious and political parties have been criticised in the videotape, the channel reported. Urging the Pakistani tribesmen and mujahideen to remain united, the tape appeals to Muslim countries to wage jihad against the United States. Al Qaeda has also claimed responsibility for London attacks in the release, the channel said. The videotape also includes footage of Al Qaeda operations in various parts of the world. It is the first release from the group, which has been translated into Urdu.