A binary chemical weapon is a weapon that has two components. Each component on its own is probably not as healthy for a human as whole wheat bread, but each component taken alone is relatively benign. Mix the two together and you have a deadly chemical weapon.
Now, I am skeptical. Why? If true why the heck wouldn't the administration show the nation? If true, that is vindication. My buddy, claimed to me the leaders don't give us credit enough to understand the details enough to know that warehouse means vindication. I would like to believe it but can not do so honestly.