chemical weapons

Novichok kills by disrupting communication between nerves and muscles or nerves in the brain.

Most international observers believe Syrian President Bashar al-Assad was behind the attack, with the support of his Russian allies.

Police believe the suspect was following an ISIS guide for making a ricin bomb.

Chemical weapons such as chlorine and the banned nerve agent sarin gas were likely used in the attack.

Forces loyal to Syrian President Bashar al-Assad have been accused of launching the strike on the rebel-held town.

Every day those 2,000 U.S. troops remain in Syria, we remain saddled with enormous strategic risk.

Alexander Zasypkin said any U.S. missiles fired at Syria would be downed by Russian defenses.

Stephen Colbert quizzed the leading diplomat about whether Trump’s critique of Obama’s Syria policy is the right one.

In an angry address to the United Nations, Russia's envoy implied rebels staged the alleged chemical attack.

How will the president follow up his critical tweet?

Sergei Skripal and his daughter are being kept heavily sedated and are still unable to communicate two weeks after they were poisoned.

An ex-spy, his daughter and a police officer are seriously ill. So what exactly is Novichok?

North Korean defectors have said chemical weapons are used against prisoners and disabled people.

North Korea and Syria have a history of working together against what they view as U.S. imperialism. In recent years, they’ve both seen success.

An account affiliated with Turkey’s so-called Operation Olive Branch claimed Kurdish fighters attacked the Free Syrian Army with chlorine gas.

The U.S. does have a history of controversial medical experiments elsewhere.

Traditional foes of U.S. foreign policy, such as Cuba, Iran, North Korea and Russia, are increasingly eager to cooperate against Trump.

Thousands of soldiers were deployed in the drills, some in hazmat suits and gas masks.

"The thing that scares me the most in the long term is the state of our politics here, and...it's gotten worse," Michael Morell said.

North Korea claims it foiled a joint CIA and South Korean plot on Kim Jong Un’s life and blasted Washington’s global war on terror.

The Russian leader announced the closure of Russia's last chemical arms facility.

The U.N.’s finding has vindicated the U.S. and its allies.

The two shipments of chemical weapons from North Korea and bound for Syria were intercepted in the last six months.

The head of Russia's Radiation, Chemical and Biological Protection Troops says the new robots will be better equipped than people to operate in deadly environments.

The claims come a week after the Pentagon announced it observed what appear to be preparations for a new chemical attack at a Syrian government airfield.

Syria’s President Bashar al-Assad made a series of public appearances, surrounding himself with military officials and supporters amid U.S. threats.

After the U.S. accused Syria of planning another chemical attack against rebels, Russia called such claims "unacceptable."

The Treasury Department hits two suspected Islamic State leaders for allegedly making chemical weapons used against the U.S. and allies in Iraq.

Documents have revealed how ISIS tested chemical weapons on prisoners, leading to their agonizing deaths.

The former president said leaders are often praised for taking military action and criticized for failing to do so. He maintains his decision not to order airstrikes in Syria was the right one.