sentences:  As of August 2018, following the end of the Siege of al-Fu'ah and Kafriya, which had been government-held until July 2018, the governorate is almost entirely under the control of the Syrian rebels (primarily the National Front for Liberation, which has over 50,000 fighters) along with Hayat Tahrir al-Sham, with estimated numbers of fighters between 12,000 and 30,000).In September 2018, a demilitarization zone was created on the front between the government and the Turkish-backed opposition, temporarily freezing the conflict.There are around 20,000-30,000 fighters in Idlib, General Joseph Dunford, chairman of the Joint Chiefs of Staff, explained in July 2019.