18 Oct 2003 – Indonesia: Imam Samudra sentenced to death for role in 12 Oct 2002 bombing in Bali.
23 Oct 2002 – Russia: Fifty Chechens seize Podshipnikov Zavod theatre in Moscow, taking more than 800 hostages; all Chechens and 124 hostages including one American were killed during the rescue.
23 Oct 1983 – Lebanon: Two truck suicide bombs were driven into the United States military barracks and the French military barracks in Beirut, Lebanon killing 299 American and French service personnel. The Islamic Jihad claimed responsibility.
31 Oct 2010 – Iraq: Armed attackers storm a Catholic church in Baghdad, killing 51 and injuring 60; Islamic State of Iraq claimed responsibility.
Dates are taken from the NCTC terrorist calendar and 361 Security Significant dates.