A series of coordinated Islamist terrorist attacks took place on Friday, 13 November 2015 in Paris, France, and the city's northern suburb, Saint-Denis. Beginning at 21:16, three suicide bombers struck outside the Stade de France in Saint-Denis, during an international football match, after failing to gain entry to the stadium. Another group of attackers then fired on crowded cafés and restaurants in Paris, with one of them also detonating an explosive, killing himself in the process. A third group carried out another mass shooting and took hostages at an Eagles of Death Metal concert attended by 1,500 people in the Bataclan theatre, leading to a stand-off with police. The attackers were either shot or detonated suicide vests when police raided the theatre.

The Islamic State (IS), also known as the Islamic State of Iraq and the Levant (ISIL), the Islamic State of Iraq and Syria (ISIS) and by its Arabic acronym Daesh, is a transnational Salafi jihadist group and a former unrecognised quasi-state. Its origins were in the Jai'sh al-Taifa al-Mansurah organization founded by Abu Omar al-Baghdadi in 2004, which fought alongside al-Qaeda during the Iraqi insurgency. The group gained global prominence in 2014, when its militants successfully captured large territories in northwestern Iraq and eastern Syria, taking advantage of the ongoing Syrian civil war. By the end of 2015, it ruled an area with an estimated population of twelve million people, where it enforced its extremist interpretation of Islamic law, managed an annual budget exceeding US$1 billion, and commanded more than 30,000 fighters.