A series of explosions hit London's transport system during rush hour Thursday morning, killing at least 37 and wounding 700 others, the deadliest terror attacks on British soil in recent years and yet another deadly incident since the Sept. 11, 2001 attacks in the United States.
Following are major terror attacks in the world after the Sept. 11 attacks:
On Oct. 12, 2002, two bombs ripped through a resort popular with foreigners on the tourist island of Bali, Indonesia, killing 202 people and injuring at least 330 others.
On Oct. 23, 2002, a group of Chechen gunmen seized a Moscow concert hall to demand an end to the Chechen war. During the rescue of the hostages, more than 120 people were killed.
On May 12, 2003, three car bombings in the Saudi capital of Riyadh left 29 dead and nearly 200 injured.
On May 12 and 14, 2003, two blasts in Russia's Chechen districts of Nadterechny and Gudermes claimed more than 70 lives and wounded more than 200 others.
On May 16, 2003, a series of five bombings in Morocco's economic capital of Casablanca killed 41 people.
On July 5, 2003, several blasts during a popular rock festival at the Tushino air field in northwestern Moscow killed at least 16 people and injured more than 40.
On Aug. 1, 2003, a truck bomb attack killed over 50 people and injured more than 80 others at a military hospital in the city of Mozdok in the Russian republic of North Ossetia.
On Aug. 5, 2003, a blast near the five-star Marriot hotel in central Jakarta, capital of Indonesia, claimed 12 lives and injured 149.
On Aug. 7, 2003, a car bomb exploded at the gate of the Jordanian embassy in the Iraqi capital of Baghdad, killing 17 people with many others injured.
On Aug. 19, 2003, a terror bombing attack on the UN headquarters in Baghdad killed 24 people with over 100 others wounded. The UN top envoy to Iraq, Sergio Vieira de Mello, died in the attack.
On Aug. 25, 2003, two bombings in India's biggest financial and commercial city of Bombay killed 52 people and injured 167 others.
On Aug. 29, 2003, a car bombing killed more than 100 people, including Iraq's top Shiite Muslim leader Ayatollah Mohammed Baqer al-Hakim, and injured more than 200 others in Iraq's Shiite holy city of Najaf.
On Feb. 1, 2004, twin suicide bombers killed 109 people in two Kurdish party offices in Irbil, Iraq.
On March 2, 2004, explosions hit Shiite Muslim shrines in Karbala and Baghdad in Iraq, killing at least 181.
On March 11, 2004, bomb explosions ripped through four commuter trains in Spain and killed at least 192 people, marking the deadliest terror attacks in Spanish history.
On Aug. 24, 2004, two Russian passenger jets crashed almost simultaneously after taking off from Moscow's Domodedovo Airport, killing all of the 90 people on board. Authorities blamed Chechen terrorists for the twin crashes.
On Aug. 31, 2004, at least 10 people were killed and more than 50 wounded in a suicide bombing outside a subway station in Moscow. An Islamist group claimed responsibility for the attack.
On Sept. 1 , 2004, heavily armed attackers storm into a school in Beslan, North Ossetia in Russia and take children and others hostage. By the time the siege ends two days later, a total of 331 people had died with over 700 others injured.
On Oct. 7, 2004, three car bombs exploded almost simultaneously at a hotel and two coastal tourist camps along Egypt's border with Israel, killing 34 people, including Israelis, Egyptians, Italians and Russians.