Saddam Hussein's regime attacked Halabja on March 16, 1988.
The attack involved mustard gas and sarin, killing thousands.
Survivors continue to grapple with the psychological effects decades later.
Briefing: In Iraqi Kurdistan, the trauma of the Halabja chemical massacre resurfaces as war returns to Iran
Strategic angle: Survivors of the Halabja attack reflect on the enduring impact of the tragedy as tensions rise in the region.