In this week’s look back, I want to highlight one of the incidents, the 2008 attack on multiple targets in the Indian city of Mumbai, carried out by Lashkar-e-Taiba. When the shooting finally stopped after three days, more than 170 people lay dead with hundreds more wounded.

While the attack stands out for both its scale and its impact on India — it’s been called that country’s 9/11 — the operation is notable for another reason. The key planner of the attacks was an American named David Coleman Headley.

The PBS investigative journalism program Frontline broadcast a fascinating report on Headley, the Mumbai attacks, and the failure of the US government’s secret electronic surveillance program to detect and disrupt the operation. I have embedded the Frontline video here. It is long, but well worth the time to watch it.

Now on to the rest of this week’s list:

• Nov. 20, 2003 — Turkey: A car bomb in front of the British Consulate General in Istanbul kills 30 and wounds 450. Al Qaeda claims responsibility.
• Nov. 21, 2000 — Sri Lanka: The Tamil Tigers start what they dub “Heroes Week” with a grenade attack on an army patrol, killing two civilians and wounding two.
• Nov. 22, 1979 — Pakistan: Islamic militants attack the US Embassy in Islamabad following rumors that the United States had taken control of the Grand Mosque in Mecca, Saudi Arabia.
• Nov. 23, 1996 — Comoros: A hijacked Ethiopian Airlines plane crashes, killing 127. The hijackers had been intending to fly to Australia and seek asylum.
• Nov. 24, 2000 — India: A gunman connected to the Kashmiri group Lashak-e-Taiba kills six Hindu and four Sikh bus passengers.
• Nov. 25, 1984 — Portugal: The US Embassy in Lisbon is struck by four mortar rounds fired by members of the 25 April Movement, a leftist revolutionary group.
• Nov. 26, 2008 — India: LeT terrorists attack multiple targets in the city of Mumbai. More than 170 are killed and 300 wounded by the time the final siege ends three days later.