According to U.S. intelligence sources cited by The Wall Street Journal, about 15,000 to 20,000 family members of Islamic State fighters have escaped Syria’s Al-Hol refugee camp, where many have been held captive for years following the territorial fall of the Islamic State group in 2019. The camp’s population surged dramatically in early 2019 after the U.S.-backed Syrian Democratic Forces (SDF) defeated the last territorial stronghold of the Islamic State in the eastern Syrian town of Baghouz.