But that would not be the same as using chemical weapons such as a nerve or blister agent.

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But that would not be the same as using a chemical weapons as defined by international treaties, such as a nerve or blister agent.

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Three tests, including one that used a highly sensitive mass spectrometer, indicated the presence of the nerve agent cyclosarin and an unspecified blister agent in a stash of 55-gallon drums, the officer said.

CNN: Initial tests of Iraqi chemicals show nerve agent