Western officials are watching closely as Syria's northeast security worsens following Kurdish defeats. The US military said it moved "150 IS fighters" from a prison in Hasakah province to Iraq. It may transfer up to 7,000 fighters to prevent a dangerous breakout. The prison, named Panorama, holds fighters from several countries, including some from the UK. Syrian government forces made fast advances, taking control of prisons and camps holding thousands of IS women and children. A ceasefire halted the advance on Tuesday. Kurdish forces lost control of prisons where IS militants were held. Some high-profile detainees like Shamima Begum remain in Kurdish hands at al-Roj camp, but reports of escapes raise concerns in Europe. Human rights group Reprieve estimates about 55 UK nationals or claimants are held in northeast Syria, many stripped of citizenship. On Monday, about 120 IS militants escaped from Shaddadi prison after government forces seized it, but 81 were re-captured. Al-Hawl camp, holding over 20,000 mostly foreign women, changed hands and aid groups have not been able to visit, raising fears of worsening conditions. European officials warn many detainees remain dangerous, though it's unclear if they can regroup or if the new Syrian government will control them effectively. IS lost territorial control by 2019, with Kurdish-led forces detaining thousands of males and housing women and children in camps. The Syrian Democratic Forces (SDF) controlled northeast Syria until December 2024, when regime change brought Hay’at Tahrir al-Sham (HTS) to power, complicating security. Analyst Nanar Hawach warns of a "dispersed insurgency rebuilding in the cracks," with prison breaks releasing skilled operatives into conflict zones. The US signaled it stopped backing the SDF. Special envoy Tom Barrack said, "The original purpose of the SDF as the primary anti-Isis force on the ground has largely expired," naming Damascus as the new partner. HTS opposes IS and cut ties with al-Qaida in 2016. Syrian government aims to be seen as a counter-terrorism partner but still lacks full capacity to manage prisons and camps. Syrian forces’ rapid offensive took Raqqa city and other territories. A temporary ceasefire was agreed after talks between HTS leader al-Sharaa and US President Donald Trump, who said he was "trying to protect the Kurds." The Kurdish SDF leader Mazloum Abdi has four days to consult before responding to new government demands for integration with Damascus.