More than 60 messages have been broadcast by Osama bin Laden, al-Qaeda's number two Ayman al-Zawahri, and their allies since the September 11th attacks in 2001. Following is a timeline of major statements attributed to bin Laden since 2007.
September 7th, 2007 - Bin Laden appears in his first videotape for nearly three years, to mark the sixth anniversary of the September 11th attacks on the United States. In a message to the American people, he says the US is vulnerable despite its economic and military power.
November 29th, 2007 - Bin Laden urges European countries in an audiotape to end their alliance with US forces in Afghanistan.
March 19th, 2008 - In an audio recording, bin Laden threatens the European Union with grave punishment over cartoons of the Prophet Mohammad.
March 20th, 2008 - Bin Laden urges Muslims to keep up the struggle against US forces in Iraq as a path to "liberating Palestine".
May 16th, 2008 - Bin Laden, in an audiotape addressed to "Western peoples", calls for the fight against Israel to continue and says the Israeli-Palestinian conflict is at the heart of the Muslim battle with the West.
May 18th, 2008 - Bin Laden urges Muslims to break the Israeli-led blockade of the Hamas-controlled Gaza Strip and fight Arab governments that deal with the Jewish state, in an audiotape posted on the internet.
January 14th, 2009 - Bin Laden, in an audiotape, calls for a new jihad over Gaza and says the global financial crisis has exposed waning US influence in world affairs.
March 14th, 2009 - Bin Laden accuses moderate Arab leaders of plotting with the West against Muslims, in an audio recording aired by Al Jazeera television.
June 3rd, 2009 - Bin Laden says in an audio message that President Barack Obama has planted the seeds of "revenge and hatred towards America" in the Muslim world and warned Americans to prepare for the consequences.
September 14th, 2009 - Bin Laden warns the American people over their government's close ties to Israel, saying it was time for Americans to free themselves from the grip of neo-conservatives and the Israeli lobby. "The reason for our dispute with you is your support for your ally Israel, occupying our land in Palestine," the tape added.
September 25th, 2009 - Bin Laden demands that European nations withdraw their troops from Afghanistan in audio tape, saying they were sacrificing men and money in an unjust US-led war. The tape, released on the internet with a background picture of bin Laden, had German and English subtitles. It was released days before Germany held a federal election.
November 6th, 2009 - A videotape of bin Laden released is the Pashto-language version of a tape released several months ago, says IntelCenter, a US-based terrorism monitoring firm. Entitled "To Our People in Pakistan," the tape was broadly released in Arabic and Urdu on July 12th, IntelCenter said. Excerpts had been aired by Al Jazeera on June 3rd, it added.
January 24th, 2010 - A purported audio tape of bin Laden is aired on Al Jazeera and claims responsibility for the attempted bombing of a US-bound plane on December 25th, 2009. "The message sent to you with the attempt by the hero Nigerian Umar Farouk Abdulmutallab is a confirmation of our previous message conveyed by the heroes of September 11th," bin Laden says on the tape.