The United Nations Security Council is meeting on Thursday to consider the continuing legacy of Syria’s chemical weapons programme following recent findings involving previously undisclosed materials.

According to UN News – Middle East, the session was scheduled to begin at 10am local time. Council members are due to receive a briefing on the latest developments and discuss possible next steps. The meeting follows separate revelations concerning nuclear and chemical materials linked to Syria under its former regime.

The UN nuclear watchdog found that the former Syrian authorities had failed to declare that they possessed nuclear material, UN News reported. The supplied information does not identify the material, say where it was held or provide details about its amount. It also does not specify when the watchdog reached its finding or describe any action taken in response. The matter nevertheless forms part of the background to the Security Council’s latest discussion.

The meeting also follows the discovery in May of an undeclared stockpile of chemical weapons. No further information was provided about the location or contents of the cache, the circumstances in which it was found, or who discovered it. The supplied material also does not indicate whether the nuclear material and the chemical weapons cache were connected.

Thursday’s briefing is focused on recent developments and the path ahead as the Council addresses the unresolved consequences of Syria’s chemical weapons legacy. The agenda places the newly discovered cache alongside the nuclear watchdog’s revelation that nuclear material had not been reported by the former regime.

The Security Council discussion provides a forum for members to review the available information and consider how to proceed. UN News did not provide details in advance about the briefing’s speakers, any proposals expected to be raised or whether the meeting could lead to a formal Council decision.

Reporting attribution: based on reporting by UN News – Middle East — original source: https://news.un.org/feed/view/en/story/2026/09/1168271.