Unless there is solid, independent intelligence to establish what actually happened it is premature to start more violence. After all, collateral damage from US intervention in the area has killed hundreds of civilians, children included. The goal should be less bombing, not more.
“How is it known that the toxic chemicals were not released as collateral damage from some other kind of attack? “
For THAT matter how is it known that toxic chemicals were released...AT ALL? I have seen an Al Qeida propaganda film and that’s about it.
By the way, I am really angry with the USMC. I spent way too much time sweating in a gas mask and even full suits and gloves...in a desert no less! And all it turns out I needed to be safe from nerve gas was a bandana and a bottled water???
BOHICA