The State Department announced today that Joe Asperman, a French national, has been designated as a terrorist. Asperman works as “a senior chemical weapons expert for ISIS” and “oversaw chemical operations production within Syria for ISIS and the deployment of these chemical weapons at the battlefront.”

The US government designated two senior Islamic State figures today, saying they are involved in the group’s chemical weapons program. US officials have previously said that so-called caliphate uses a “mustard agent” in its attacks.
