Chemical watchdog concerned over chlorine attackOrganization for the Prohibition of Chemical Weapons says it is "disturbed" by the alleged use of toxic chemicals in Aleppo.
Syrian regime reportedly uses chlorine in AleppoDozens of people treated for breathing problems in Aleppo after regime helicopters drop barrel bombs which may have contained chlorine gas.
Russia rejects UN findings on SyriaRussia says findings of a UN-led investigation on Syrian chemical attack are not conclusive enough to trigger sanctions.
France presses UN to condemn chemical attacksFrance pressing Security Council members to condemn the Syrian government over report that Syrian troops used chemical weapons.
U.S. calls for Assad to be held accountableWhite House says it is "impossible to deny" that Syria launched chemical weapon attacks.
UN: Both Assad and ISIS used chemical weaponsUN investigation finds Syrian President's forces carried out at least two chemical attacks, and ISIS jihadists used mustard gas as a weapon.
France concerned over chemical attack in SyriaFrance alarmed at reports of a deadly chemical attack in the Syrian battleground city of Aleppo.
Watchdog demands Syria explain chemical arsenalOPCW pressing Syria to explain why it still has four undeclared chemical warfare agents.
Russia seeks resolution on Syria chemical weaponsRussia and China propose UN resolution that would have states report when terrorists are developing chemical weapons in Syria.
Obama 'proud' of decision not to attack SyriaPresident says he does not regret not attacking Syria despite warning that its using chemical weapons would be crossing a red line.
State Dept. 'aware' of reported chemical attacksState Department spokesman: Washington is aware of reports that chemical weapons were used in Syria, but can't confirm them.
UN team probing chemical attacks to visit SyriaUN team tasked with identifying those responsible for chemical attacks in Syria will begin investigations in early March.
Syria's chemical arsenal completely destroyedUN chemical weapons watchdog says Syria's arsenal has been completely destroyed after more than two years of work.
Watchdog finds traces of sarin exposure in SyriaOPCW says it has found that some people in Syria may have been exposed to sarin or a sarin-like gas.
Hagel: Obama hurt his credibilityFormer Defense Secretary criticizes President Obama for his failure to follow up on a warning to Syria about using chemical weapons.
Syria denies using chemical weapons in civil warSyria tells global watchdog it is fully cooperating with the destruction of its toxic stockpile, as agreed upon in 2013.
Watchdog 'concerned' over Syria chemical weaponsOrganization for the Prohibition of Chemical Weapons calls for those behind chemical attacks in Syria to be held accountable.
OPCW 'confident' mustard gas was used in SyriaUN chemical weapons watchdog confirms mustard gas was used in Syria in August, and also reports yet another chlorine attack.
UN watchdog: Mustard gas was used in SyriaOPCW source says it has been concluded that mustard gas was used during fighting in Syria, but can't say who used it.
Russia Delaying Syrian Chemical Weapons ProbeDiplomats say Russia is delaying the launch of UN investigation aimed at assigning blame for chemical weapon attacks in Syria.
Security Council Approves Syria Chemicals ProbeUN Security Council votes unanimously to set up a panel to identify who is behind deadly chlorine gas attacks in Syria.
Will Perpetrators of Syria Attacks be Identified?United States and Russia agree on draft UN resolution aimed at identifying the perpetrators of chemical weapons attacks in Syria.
White House Concerned Over Syrian Chemical WeaponsWhite House concerned over the fact that undeclared traces of chemical weapons were found in Syria.
Diplomats: Sarin and VX Found in SyriaInternational inspectors have found traces of sarin and VX nerve agent in Syria that had not been declared to the OPCW.
Syria Destroys Three Chemical Weapons SitesIn latest report, OPCW says Syria has destroyed three of its 12 chemical weapons production sites.
UN Head of Disarmament Steps DownRepresentative in charge of disarming Syria's chemical weapons steps down, will be replaced by adviser to Ban Ki-Moon.
UN Investigators Confident Chlorine Used in SyriaChemical weapons investigators conclude "with a high degree of confidence" that chlorine gas was used in Syria last year.
Syria Declares Four More Chemical FacilitiesSyria declares four chemical weapons facilities it had not mentioned before, raising concerns among the West.
Panetta Criticizes Obama Over Failure in SyriaIn new book, former defense chief criticizes Obama's backtracking on action in Syria over its use of chemical weapons.
Kerry: Assad Will be Held to Account Over ChlorineSecretary of State John warns Assad's regime it would be held to account for using chlorine gas against civilians.
Kerry: Assad Violated Chemical Weapons TreatySecretary of State says there is evidence that Syrian President is using chlorine gas “in violation” of a global chemical weapons treaty.
Israel: Syria Has Retained Some ChemicalsIsrael believes Syria has retained caches of combat-ready chemical weapons after giving up raw materials, says senior Israeli official.
OPCW Confirms Chlorine Gas was Used in SyriaThe Organization for the Prohibition of Chemical Weapons says it found "compelling confirmation" of the use of chlorine gas in Syria.
U.S. Concerned Terrorists Will Seize ChemicalsWashington concerned that the most dangerous terrorist groups could get a hold of chemical weapons if Syria is hiding any stockpiles.
Obama: Syria's Chemicals EliminatedU.S. President announces that Syria's declared chemical weapons stockpile has been eliminated, says it's "an important achievement".
Three Quarters of Syria's Chemicals DestroyedThree quarters of Syria’s chemical stockpile has been destroyed, says Organization for the Prevention of Chemical Weapons.
UN Chemical Experts to Return to Syria Next MonthA team of chemical weapons experts will travel to Syria next month to follow up on Damascus' pledge to hand over its arsenal.
Syrian Chemical Weapons Loaded onto American ShipSyrian chemical weapons loaded onto a the MV Cape Ray, a day after it arrived in the southern Italian port of Gioia Tauro.
U.S. Ship in Italy to Destroy Syria's ChemicalsMV Cape Ray arrives in southern Italy for the transfer and destruction of 1,300 tons of Syrian chemical weapons.
Syria Ships Out Last Declared Chemical StockpileOPCW says the final stockpile of Syria's chemical weapons has been shipped out of the country.
Inspectors: Chlorine Gas Likely Used in SyriaChemical weapons inspectors say they found information suggesting that chlorine gas had been used in Syria.
Chlorine Gas in Syria? Results 'Inconclusive'Paris backpedals on statements accusing Syrian regime of using chlorine gas after lab tests prove nothing.
Kerry: 'Raw Data' Suggests Syria Used Chlorine GasU.S. Secretary of State says he has seen “raw data” indicating that the Syrian government has used chlorine gas in a “number of instances”.
France: Too Bad Obama Didn't Strike in SyriaFrance's Foreign Minister says the Syrian regime is believed to have used chemical weapons 14 times since late 2013.
Destruction of Syria's Chemicals Nearly CompleteSyria has nearly completed surrendering its chemical weapons stockpile, say UN and OPCW.
Chlorine Gas a Loophole in OPCW Agreement?Claim: International agreement banned sarin gas, but not chlorine - leading Syria to use the loophole in more attacks.
Syria Submits 'Specific' List of Chemical Weapons'Discrepancies' were found in the original list Syria provided to the joint mission, officials claim, amidst rumors of more attacks.
Report: Another Chemical Weapons Attack in Syria?Israeli defense officials believe Assad's forces have attacked again in Damascus - twice.
Syrian Opposition Accuses Assad of Chemical AttackSyrian opposition activists claim Assad’s forces used chemical weapons in the Jobar neighborhood of Damascus on Thursday.
Only Half of Syria's Chemical Weapons RemovedOPCW reports a mere 34.8% of the most lethal Priority 1 chemicals removed, same day Syrian army conquers Crusader castle.
Syria to Miss Another DeadlineSources at the OPCW predict that Damascus will miss March 15 deadline to destroy 12 declared production facilities.
March 'Critical' for Syria Chemical OperationMarch will be a "critical" month for the operation to remove Syria's chemical weapons, says UN official tasked with overseeing the mission.
NATO, Russia in Talks on Syria Chemical ArmsDespite tensions over Ukraine, NATO and Russia are discussing a joint mission to protect a U.S. ship that will destroy Syria's chemicals.
Syria Wants 100 More Days to Destroy ChemicalsSyria submits a new 100-day plan for the removal of its chemical weapons, but the world is not impressed.
EU Gives OPCW Money to Destroy Syria's ChemicalsEU signs over 12 million euros to the Organization for the Prohibition of Chemical Weapons (OPCW).
Third Chemical Weapons Shipment Leaves SyriaOPCW announces third shipment of Syrian chemical weapons shipped after US denounces Assad over dragging his feet.
British PM: Destruction of Syria's Chemicals SlowBritish Prime Minister David Cameron expresses concern over the to destroy Syria’s chemical weapons, says it is going too slow.