Al-Nusra Front, also known as Front for the Conquest of the Levant, was a Salafi jihadist organization fighting against Syrian government forces in the Syrian Civil War. Its aim was to overthrow president Bashar al-Assad and establish an Islamic state ruled by Sharia law in Syria.

Hay'at Tahrir al-Sham, commonly referred to as Tahrir al-Sham, is a Sunni Islamist political and armed organisation involved in the Syrian Civil War. It was formed on 28 January 2017 as a merger between Jaysh al-Ahrar, Jabhat Fateh al-Sham (JFS), Ansar al-Din Front, Jaysh al-Sunna, Liwa al-Haqq, and Nour al-Din al-Zenki Movement. The unification process was held under the initiative of Abu Jaber Shaykh, an Islamist commander who had been the second Emir of Ahrar al-Sham.