The Pentagon is looking for better ways to prevent chemical weapon attacks.

Top News Could Russia have lost control of a chemical weapon?

And, last but certainly not least, is Sure Guard, a genuine chemical weapon.

Maybe the U.S. should punish Syria for alleged chemical weapon attacks.

But the UN's chief watchdog said he believed Libya's chemical weapon stockpiles remained safe.

It's about a small town that gets taken over by a military chemical weapon.

Mr Cameron said he had seen evidence that seemed to point to chemical weapon usage.

But it becomes a chemical weapon as soon as it is used directly against people.

Dozens have died, and hundreds lie injured after what was quite clearly a chemical weapon attack.

It wouldn't be practical as a chemical weapon and there's no way to make it so.

But it is also a chemical weapon, squirting a dose of toxins directly into your bloodstream.

How can that not be a chemical weapon?

Police also want to lay charges of using a chemical weapon contrary to the Chemical Weapons Act.

Chlorine is a choking agent whose use as a chemical weapon dates back to World War One.

Had the Pentagon really thought about a chemical weapon which made soldiers irresistibly attractive to each other?

He heard the chemical weapon booming thunderously.