June 4 (Reuters) - Al Qaeda's second-in-command Ayman al-Zawahri issued a statement on Wednesday urging Palestinians to step up suicide and rocket attacks, saying they were the only way to end Israel's blockade of the Gaza Strip. At least 50 messages have been broadcast by Osama bin Laden, Zawahri and their allies since the Sept. 11 attacks in 2001. Following is a chronology of major statements attributed to Zawahri in the past year. May 23, 2007 - Zawahri eulogises Mullah Dadullah, a Taliban leader killed in Afghanistan earlier in the month, and urges his followers to pursue his fight against U.S.-led forces. June 25 - Zawahri urges all Muslims to support Hamas in its battles with Palestinian President Mahmoud Abbas and Israel. July 4 - Zawahri, in a new video, calls for the overthrow of "corrupt" Muslim governments and talks about unity in jihad. July 10 - Zawahri threatens more attacks on Britain two weeks after failed bombings in London and Glasgow. July 11 - Zawahri, in an Internet recording, calls for revenge over the Pakistani government assault on an Islamabad mosque that killed more than 70 Islamists. Dec. 14 - Zawahri, in an audio recording, accuses Arab leaders of betraying the Palestinians by attending a Middle East peace conference in the United States and urges Muslims to keep fighting. Zawahri denounced the roles of Saudi Arabia and Egypt, saying they were serving Israel and U.S. interests. Dec. 16 - Zawahri says in a video posted on the Internet that Britain's handover of security in southern Iraq shows insurgents are gaining the upper hand there. April 2, 2008 - In a new audio message, Zawahri denounces the United Nations, vows to attack Jews both within and outside Israel and says bin Laden is alive and well. April 18 - Zawahri in a new message mocks Bush's decision to suspend troop withdrawals from Iraq this summer, saying the U.S. president was scared of admitting defeat. Zawahri also mocked hopes that the Awakening Councils, security units created by Sunni Arab tribal groups to fight al Qaeda in Iraq, would restore stability to the country. April 22 - Zawahri says in the second and final instalment of his answers to questions compiled by Islamist Web sites that The Islamic State in Iraq remains to this day the main force confronting the crusaders and their collaborators. -- Zawahri also says U.S.-led forces are losing the battle against the Taliban in Afghanistan. June 4 - In an Internet recording, Zawahri urges Palestinians to step up suicide and rocket attacks against Israel. (For main story please see [nL04261652]) (Writing by David Cutler, London Editorial Reference Unit; editing by Andrew Dobbie)
Palestinian youths throw stones at Israeli border police officers during a protest against the construction of Israel's controversial barrier in the West Bank village of Nilleen, near Ramallah, June 4, 2008. ...