11 Sept - Three hijacked planes are flown into major US landmarks, destroying New York's twin World Trade Centre towers and ploughing into the Pentagon. A fourth hijacked plane crashes in rural Pennsylvania. 2976 people are killed.
11 April - A truck explodes near El Ghriba synagogue on the southern Tunisian island of Djerba, killing 14 Germans, five Tunisians and a Frenchman. Al-Qaida claims responsibility.
8 May - An assailant in a car kills himself, 11 French navy experts and three Pakistanis outside the Sheraton Hotel in Karachi, Pakistan. A Pakistani court later finds three members of the banned Islamic group Harkat-ul Muhajideen guilty of planning the attack.
14 June - A car bomb outside the US consulate in Karachi
kills at least 11 people and wounds 45. Four members of
Harkat-ul Muhajideen are later found guilty.
12 Oct - Bombs explode in Kuta Beach nightclub district of
Bali in Indonesia, killing 202 people and wounding hundreds. A
third bomb explodes near the US consulate in Sanur near Kuta, without causing casualties. Members of the banned Islamic group Jemaah Islamiyah, linked to al-Qaida, admit responsibility.
28 Nov - At least 15 people are killed in car bomb attack on
hotel frequented by Israeli tourists in Kenyan port of Mombasa while two missiles miss Israeli airliner taking off from the
city. Al-Qaida admits responsibility.
12 May - Suicide bombers in vehicles shoot their way into
housing compounds for expatriates in Saudi capital of Riyadh.
Some 35 people, including nine Americans, are killed. US
Secretary of State Colin Powell blames al-Qaida.
May - Bombers set off at least five explosions in
202 people die in an attack linked
to al-Qaida in a Bali nightclub
Casablanca, Morocco, which hit a Spanish restaurant, a five-star hotel and a Jewish community centre, killing 45 people, including 12 bombers, and wounding about 60. Members of the Morrocan organisation the Salafist Jihad, which has indirect links to al-Qaida, are found guilty.
7 June - A suicide car bomber blows up a bus full of German peacekeepers east of the Afghan capital Kabul, killing four and wounding 31. An Afghan civilian and the bomber are also killed. German Defence Minister Peter Struck blames al-Qaida.
5 Aug - A huge bomb kills 10 people and wounds 150 when it
rips through the Marriott Hotel in the Indonesian capital,
Jakarta. The militant group Jemaah Islamiyah is blamed by
Indonesian Defence Minister Matori Abdul Djalil for the blast.
Aug - The Brigades of the Martyr Abu Hafz al-Masri, said to be an al-Qaida division, claim responsibility for a massive truck bomb which devastates the UN headquarters in Baghdad. Twenty two people are killed, including Sergio Vieira de Mello, the top UN envoy to Iraq.
Dozens die when explosions hit
HSBC bank and British consulate
15 Nov - Two car bombs explode outside synagogues in central Istanbul, killing up to 25 people. An Arabic newspaper says the Brigades of the Martyr Abu Hafz al-Masri claim responsibility.
20 Nov- Explosions hit the HSBC bank and the British
consulate in Istanbul, killing at least 27 people, according to
television reports. A caller to Anatolian news agency claims
responsibility on behalf of al-Qaida and a Turkish Islamist