18 Oct 2003 – Indonesia: Imam Samudra sentenced to death for his role in the 12 Oct 2002 bombing in Bali.
18 Oct 2012 – Columbia: The government of Columbia and the Revolutionary Armed Forces of Columbia (FARC) negotiators launch Norway peace talks.
20 Oct 2011 – Libya: Muammar Gaddafi the former leader of Libya was killed.
23 Oct 2002 – Russia: Fifty Chechens seize Podshipnikov Zavod theatre in Moscow, taking more tha n 800 hostages; all Chechens and 124 hostages including one American killed during the rescue.
23 Oct 1983 – Lebanon: Islamic Jihad bombs US Marine barracks in Beirut, killing 241 US Marines and 58 French paratroopers.
28 Oct 2002 – Jordon: USAID official Laurence Foley assassinated in Amman.
28 Oct 2001 – Philippines: ASG bomb in Zamboanga kills 11 and injures 50.
29 Oct 2005 – India: Bombings in New Delhi kill 55, injure 200; Islamic Inquilab Mahaz group claim responsibility.
31 Oct 2010 – Iraq: Armed attackers storm a Catholic Church in Baghdad, killing 51 and injuring 60; Islamic State of Iraq claims responsibility.
31 Oct 1984 – India: Prime Minister Indira Gandi assassinated by her Sikh bodyguards; many Sikhs killed in retaliation for her death.
Dates are taken from the NCTC terrorist calendar and 361 Security Significant dates.