INTERNATIONAL INSPECTORS UNCOVER HIDDEN SYRIAN CHEMICAL WEAPONS SITES AMID POSTWAR SECURITY INSTABILITY. (PHOTO).

 International inspectors uncover hidden Syrian chemical weapons sites amid postwar security instability

Over a decade after Syria agreed to dismantle its chemical weapons arsenal, international inspectors have uncovered previously hidden materials tied to the country’s former program, raising new concerns as the nation moves through a fragile and uncertain postwar transition.

The discoveries, detailed in a late May report, include chemical munitions such as aerial bombs and rockets, along with production materials and thousands of pages of documents linked to the chemical weapons program under ousted President Bashar al-Assad. Investigators also identified weapons components consistent with those used in major chemical attacks in 2013 and 2017, including in Ghouta, Khan Shaykhun and Ltamenah.

The findings come as Syria’s security situation remains highly unstable following years of war and shifting control across the country. A recent assessment described the transition as fragmented, with competing armed groups and a new central authority struggling to consolidate control over territory once held by various factions. The withdrawal of U.S. forces from several bases has further reshaped the security landscape, ending a long-standing military presence and transferring control to local forces.

According to inspectors, information gathered since the collapse of the Assad government in late 2024 suggests there may be more than 100 additional sites potentially linked to the chemical weapons program, far exceeding the 26 locations previously identified.

Since March 2025, inspectors have visited more than 20 sites across Syria, including facilities that were previously inaccessible. Despite that progress, officials caution that the full extent of the program may still not be known as control of territory continues to shift among government forces and other armed actors.

Security experts warn that the instability raises the risk of proliferation, particularly if individuals with knowledge of the program retain access to remaining materials. Concerns have also been raised that such materials or expertise could be diverted to non-state groups operating in the region.

At the same time, Syria faces broader security challenges, including instability in detention systems holding suspected militants and displaced families linked to the Islamic State group. Reports have pointed to escapes and gaps in monitoring that have complicated efforts to contain extremist activity, while the withdrawal of U.S. forces has reduced intelligence and surveillance capacity in key areas.

Analysts say the combination of incomplete accounting for chemical weapons materials, fractured security control and ongoing militant threats creates persistent risks. It remains unclear whether Syria’s transitional authorities can fully secure remaining sites while also unifying the country’s divided security apparatus.