Taha Sobhi Falaha, known by his nom de guerre Abu Muhammad al-Adnani al-Shami, was the official spokesperson and a senior leader of the Islamic State. He was described as the chief of its external operations. He was the second most senior leader of the Islamic State after its leader Abu Bakr al-Baghdadi. Media reports in August 2016 suggested he was in charge of a special unit, known as the Emni, that was established by IS in 2014 with the double objective of internal policing and executing operations outside IS territory.

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.