2013 mass murders

2013 terrorist event in Boston, Massachusetts, U.S.

explosion at a fertilizer plant in West, Texas

2013 hostage crisis in Algeria

series of chemical attacks in Syria on 21 August 2013

Syrian Sunni Muslim scholar (1929–2013)

Deliberate crash of an Embraer 190 in Namibia on November 29, 2013

2013 spree shooting in Mladenovac, Serbia

2013 bombings in Turkey

Pakistani church bombing

suicide bombing took place on a bus in the city of Volgograd, Russia

murder

bomb blasts in the city of Hyderabad, India

Hindu–Muslim clashes in Uttar Pradesh, India

double suicide bombing that occurred in front of the Iranian embassy in Beirut, Lebanon

2013 terror attacks in Quetta, Balochistan, Pakistan

2013 attacks in Bihar, India

2013 terrorist attack by Boko Haram

2013 bombing of a market in Quetta, Balochistan, Pakistan

2013 militant attck in Yemen

2013 chemical weapons attack during the Syrian Civil War

terrorist incident in Syria

2013 engagement between Colombian military forces and FARC guerillas

murder-suicide attack in Xiamen, China