In their high-security base in the Wiltshire countryside, the scientists of Porton Down made an astonishing discovery.

Add Yahoo as a preferred source to see more of our stories on Google. German troops make their way through a cloud of smoke or gas during a gas training drill, circa 1916. Henry Guttmann/Hulton ...

Assad's regime are reorganizing and rearming in a country with ample stock of leftover chemical weapons. Even a single successful chemical attack by Assadist insurgents in Syria could scare off ...

The international community should immediately investigate accusations that the Islamic Republic attacked demonstrators with weapons of mass destruction.

In this photo released by the Syrian official news agency SANA, Syrian President Bashar Assad, left, meets with Robert Ford, the new U.S. ambassador to Syria, in Damascus, Syria, on Jan. 27, 2011.

With Western leaders weighing whether to intervene in the Syrian war with a Libya-style bombing campaign or by arming the Syrian rebels with heavy weaponry, it would seem logical that President Bashar ...

It is beyond dispute that Thailand used white phosphorus munitions during its recent border clashes with Cambodia. Whether those munitions were actually used as “chemical weapons,” however, is unclear ...

Update at 12:32 p.m.: A new paragraph — second-to-last — was added to reflect sporadic uses of chemical weapons after World War I. The use of chemicals weapons last week in Syria, if proved, would put ...

Correction appended: Dec. 11, 2013, 1:40 a.m. E.T. The Organisation for the Prohibition of Chemical Weapons (OPCW) received its Nobel Peace Prize in Oslo today, an award bestowed for the Hague-based ...

As concern grows over Syria's stockpile of chemical weapons, a new report suggests that one country is already figuring out how it intends to bomb them out of existence. Jeffery Goldberg, over at our ...