UN chemical watchdog: Syria has yet to disclose its chemical program
Syria agreed to destroy its chemical weapons in 2013 under a deal brokered by Moscow and Washington.
Syria agreed to destroy its chemical weapons in 2013 under a deal brokered by Moscow and Washington.
The last of the USA's declared chemical weapons arsenal has been safely destroyed under the Chemical Weapons Convention of 1997.
Nazi chemical weapons dating to the end of World War II placed at the bottom of the Baltic Sea by the Allies now pose toxic danger.
Organization for the Prohibition of Chemical Weapons expresses concern following reports of use of chemical weapons in Mariupol.
Ukrainian President calls on West to impose strong sanctions on Russia to deter it from using chemical weapons.
The US other countries have warned that Russia could deploy chemical or biological weapons in Ukraine.
US President: Russia's accusations that Kyiv has biological and chemical weapons illustrate that Putin is considering using such weapons.
Ukraine Pres. denies allegations of chemical weapons manufacture, warns Russia will suffer 'most severe sanctions' if it uses such weapons.
Russia requests Security Council meeting a day after claiming US conducts “military biological activities" in Ukraine.
Warning comes after Moscow claims US houses biological weapons in Ukrainian territory.
Syria rejects global watchdog's report that found it used chemical weapons on a rebel-held town in 2018.
Report concludes that units of the Syrian Arab Air Force used chemical weapons in rebel-held Saraqib on 4 February 2018.
Treasury Secretary Mnuchin says US will counter any efforts by Iran to develop WMDs.
State Department says there are signs that Syrian government may be using chemical weapons, warns of response.
New report Syria has carried out hundreds of chemical attacks on civilians since deal to destroy chemical weapons.
US National Security Adviser arrives in Israel, warns Syria there's no change in US position against the use of chemical weapons.
Russian warplanes attack rebel-held areas in northern Syria following suspected poison gas attack in Aleppo.
Syrian media claims rebels used poison gas in attack on the al-Khalidiya neighborhood of Aleppo.
Syrian arrested in Germany in alleged plot to attack Israeli targets with chemical weapons.
US representative for Syria says there is "lots of evidence" that chemical weapons are being prepared by Syrian government forces in Idlib.
White House warns Syrian President against using chemical weapons in Idlib, says the US and its allies will respond "appropriately".
The Hague-based global convention against chemical weapons recognizes Palestinian statehood, accepts PA as member state.
US Defense Department publishes documentation of launching of missiles at Syrian chemical weapons sites from navy ship.
US Ambassador to UN says US ties with Russia are 'very strained' following Syria missile strikes, says US not withdrawing from Syria yet.
Trump says Syria strike was 'perfectly executed,' 'mission accomplished.' Pence: Strikes were 'morally right act to take.'
French president says government has not decided yet whether to participate in military response to chemical weapons attack on civilians.
President Trump decries 'heinous' Syrian chemical weapon attack, will determine response over next day or two.
President Trump vows Syrian regime will pay a 'big price'.
'Just a few years ago, a single chemical weapons attack would have united us in shock and anger, enough for us to take immediate action.'
Nikki Haley warns UN Security Council that chemical weapons may be used elsewhere if action is not taken against Russia's attack in UK.
Top Syrian defector says Iran developing missiles with chemical warheads 'to be used in Syria - but also for operations across the border.'
U.S. says Russia violated its duty to guarantee the destruction of Syria’s chemical weapons.
20 people killed in apparent chemical weapons attack in Idlib province in Syria.
Syrian activists say at least 11 people suffered chlorine gas poisoning during attack in Idlib province.
US Amb. Nikki Haley speaks about chemical weapons use in Syria at a UN Security Council meeting.
Two North Korean shipments to Syrian government agency responsible for chemical weapons intercepted by UN in six months.
Syrian Foreign Ministry tells Organization for the Prohibition of Chemical Weapons that their report is 'the creation of a sick mind.'
Activity associated with chemical weapons spotted by US intelligence as President warns Assad preparing new chemical weapons attack
White House says Syria preparing for massacre of civilians using chemical weapons, warns Assad he will 'pay a heavy price'.
General Mattis visits Israel, says Assad definately still possesses chemical weapons after recent chemical attack on civilians.