A timeline of major terrorist attacks abroad since Sept. 11, 2001:
Oct. 12, 2002: Two nightclubs were bombed in Bali, Indonesia, killing 202 people. Extremists from Jemaah Islamiyah, an al-Qaida-affiliated Islamist group, were convicted of the attack.
Oct., 23, 2002: Dozens of armed Chechens raided the Dubrovka Theater in Moscow and took hostages. The standoff ended when special forces pumped gas into a room where hostages were held, and attacked. All perpetrators died, along with up to 130 hostages.
Aug. 5, 2003: The J.W. Marriott Hotel in Jakarta, Indonesia, was bombed, killing 12 people, and Jemaah Islamiyah claimed responsibility.
Nov. 15 and 20, 2003: Suicide truck bombings at two synagogues, the British consulate and London-based HSBC Bank in Istanbul killed more than 50 people. Al-Qaida-affiliated suspects were charged and convicted.
March 11, 2004: Bombs on trains killed 191 at Madrid's Atocha station in Europe's worst Islamic terror attack. An al-Qaida-inspired terrorist cell was blamed.
Sept. 1, 2004: Armed Islamist Ingush and Chechen fighters attacked school in Beslan, North Ossetia, and took over 1,100 hostages, nearly 800 of them children. Russian special forces stormed the school and over 330 hostages and dozens of perpetrators were killed.
July 7, 2005: Fifty-two commuters were killed when four al-Qaida-inspired suicide bombers blow themselves up on three London subway trains and a bus.
Sept. 20, 2008: A dump truck filled with explosives detonated in front of the Islamabad Marriott Hotel in Islamabad, Pakistan, killing more than 50 people. The Taliban and al-Qaida were suspected but did not claim responsibility.
Nov. 23, 2008: Gunmen associated with the terror group Lashkar-e-Tayyiba attacked buildings in Mumbai, India, killing 164 people.
July 22, 2011: Anti-Muslim extremist Anders Behring Breivik planted a bomb in Oslo, then attacked a youth camp on Norway's Utoya island, killing 77 people, many of them teenagers.
March 11, 2012: A gunman claiming links to al-Qaida killed three Jewish schoolchildren, a rabbi and three paratroopers in Toulouse, France.
Sept. 21, 2013: Gunmen attacked shoppers at the Westgate mall in Nairobi, Kenya, killing 67 and wounding more than 175. The extremist Islamic group al-Shabaab claimed responsibility.
May 24, 2014: Four people are killed at the Jewish Museum in Brussels by an intruder, a suspect who is a former French fighter linked to Islamic State.
Jan. 3-7, 2015: Boko Haram militants attacked in Baga, Nigeria. Death toll ranged from 150 to 2,000 people. It was the worst death toll for an attack carried out by Boko Haram, which has claimed responsibility for dozens of attacks with deaths ranging from just a few to hundreds of people over several years.
Jan. 7, 2015: Two al-Qaida-linked gunmen killed 11 people at the Charlie Hebdo magazine in Paris and killed a police officer outside. A total of 17 people and three gunmen die in bloodshed including an attack on a kosher market.
April 2015: Up to 147 people, mostly students, at Garissa University in Kenya are killed in attack; al-Shabaab claims responsibility.
Oct. 10, 2015: Suicide bombers detonated devices in Ankara and killed about 100 people in the Turkish capital. Investigators suspected Islamic State-linked perpetrators.
Compiled by Zachary R. Dowdy