Islamic State operatives carry out a series of coordinated terrorist attacks in Paris, including suicide bombings, mass shootings and a hostage crisis. The terrorists kill 130 people, making it the deadliest attack in France since the Second World War.

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 militant organisation and internationally unrecognised quasi-state. IS occupied a significant amount of territory in Iraq and Syria from 2013 to 2016, but lost most of it between 2017 and 2019. In 2014, the group proclaimed itself to be a worldwide caliphate and claimed religious and political authority over all Muslims worldwide, a claim not accepted by the vast majority of Muslims. It is designated as a terrorist organisation by the United Nations and many countries around the world, including Muslim countries.