Israel believes Syria used sarin gas on ISISDid Assad save his deadliest weapon despite an international effort to destroy his arsenal?
Report: Hezbollah using chemical weaponsLebanese terrorist group accused of using chemical weapons against rebel areas, particularly in Aleppo and Ghouta.
ISIS may be manufacturing its own chemical weaponsHead of Organization for the Prohibition of Chemical Weapons warns of evidence jihadists now capable of producing WMDs.
Israel hunting chemical-armed ISIS cell in GolanIsraeli intelligence agencies in a race against time against ISIS cell located on Syrian side of the border, according to report.
'Clear threat' of chemical attacks in EuropeRussia calls for tougher measures against rebel groups in Syria, warning future terror attacks in Europe could involve chemical weapons.
161 chemical weapons used during Syrian conflictThe Syrian American Medical Society reports 1,491 deaths caused by chemical attacks, with 14,581 people injured.
Iraqi PM to retaliate after ISIS chemical attackOne killed, hundreds injured in ISIS mustard gas attack. Iraq vows to retaliate.
Iraqi girl dies after ISIS chemical attackThree-year-old Iraqi girl dies after being wounded in an ISIS chemical attack near Kirkuk.
US coalition strikes ISIS chemical weapon sitesCaptured ISIS operative proves to be a treasure trove of intel, helping US launch first air strikes on the jihadists' chemical weapons.
Lights out for Syria, electricity mysteriously cutIn the midst of a partial ceasefire, Syria's electric grid suddenly shut down, cutting off power nationwide. Internet services also cut.
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.
Yaalon: Assad used chemical weapons during truceIsraeli Defense Minister claims regime forces have carried out several chemical attacks involving chlorine gas since onset of ceasfire.
Watch: Iran gears up for chemical warIn unveiling new weapons including chemical suits, medicine for chemical agents, Defense Minister vows to continue 'foiling' US sanctions.
Sanders adviser suggests Israel gassed SyriansForeign policy adviser to Bernie Sanders bashes 'Jewish lobby' controlling America, suggests Israel may have gassed Syrians in 2013.
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.
ISIS is using chemical weaponsThe Islamic terror group produced, used chemical weapons on Iraqi Kurds, reports OPCW, in first known chemical terrorism in 20 years.
CIA chief: ISIS can make chemical weaponsCIA director John Brennan warns that ISIS has the capability to make small quantities of chlorine and mustard gas.
Libyan official: ISIS got our chemical weaponsLibyan former intelligence official claims terrorist groups got hold of Qaddafi's chemical weapons arsenal and then smuggled it to Syria.
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.
Tests Show ISIS Used Mustard Gas on KurdsBlood samples show ISIS used chemical weapons in assault against Kurdish forces in Iraq.
US: 'We Know ISIS is Using Mustard Gas'The US intelligence community is convinced ISIS has manufactured, or found, mustard gas - and moved on to chemical warfare.
Charity: Syrians Likely Exposed to ChemicalsDoctors Without Borders reports treating four patients in Syria who showed symptoms of exposure to chemical agents.
Tests Find Traces of Mustard Gas in ISIS MortarsSenior American military official confirms preliminary tests show traces of sulfur mustard on mortars fired by ISIS.
Chem Watchdog Concerned by ISIS Use of Mustard GasOrganization for the Prohibition of Chemical Weapons voices serious concern over reports that ISIS used chemical weapons.
Testing Confirms ISIS Used Mustard Gas in SyriaOfficials say test results from ISIS attack in Syria confirm mustard agent was used. Similar attack in Iraq still under investigation.
Report: ISIS Used Mustard Gas in IraqSenior American officials say it is believed ISIS jihadists used mustard agent in an attack on Kurdish forces in Iraq.
Officials: Syria's Chemical Arsenal Wasn't RemovedInspectors reveal regime lied to them and hid chemical arsenal, but Western governments refused to press Assad.
Syrian Kurds Say ISIS Used Chemicals Against ThemKurds, monitoring group say ISIS fighters fired missiles containing toxic gas at Kurdish forces in Syria last month.
Entire Syrian Chemical Weapon Stock DestroyedOPCW hails completion of 2-year mission to destroy Syria's sarin and mustard gas stores.
Report: Israel Helped Obama Prevent Syria StrikesNew book alleges top Israeli officials pitched intervention plan on Syria chemical weapons fiasco - and set poor precedent for Iran.
Russia Wants Answers on Syria Chlorine Gas AttacksEven Syria's longtime ally says an investigation is warranted into reports of up to 45 attacks in recent months on innocent Syrians.
Ya'alon: Chemical Threat from Syria Has DroppedDefense Minister says the chemical threat from Syria has dropped due to international pressure.
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.
Assad: There Are No Iranian Troops in SyriaSyria's President admits he invited Hezbollah to fight alongside his regime but denies Iran has sent troops to participate in the civil war.
Assad Has 'Paid no Price for Chemical War Crimes'UN Security Council hears evidence from doctors of chemical attacks; 'attacks come from helicopters - which only Assad has.'
HRW: 'Strong Evidence' Assad Used Chlorine GasPair of attacks in Idlib province likely from regime helicopters, rights group insists.
ISIS Chemical Weapon Attack - in Indonesia?Indonesian police say gas attack in Jakarta last month was the work of jihadists returning home from Syria.
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.
Syria Starts Razing Chemical Weapons SitesOPCW: Syrian regime destroying terror tunnels, chemical smuggling routes in long-awaited move as part of international deal.
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.
Israel to Halt Majority of Gas Mask ProductionGas mask production for civilians and IDF soldiers will cease due to reduced chemical weapons threat from Syria.
Official: Investigate Israel Over Chemical WeaponsIsrael has a large store of chemical weapons, a top UN official charged Wednesday, calling for an investigation into Israel's cache.
Syria: We Didn't Use Chlorine - 'Terrorists' DidSyria’s deputy foreign minister denies his government used chemical weapons or chlorine, places the blame on the rebels.
Report: ISIS Used Chemical Weapons Against IraqRumored chlorine gas attack in Iraq raises questions - was the group's stronghold in Syria responsible for other attacks?
ISIS Captures Saddam's Chemical Weapons ComplexAfter capturing Iraq's largest oil refinery and becoming 'world's richest terror group,' ISIS captures Saddam-era chemical facility.
Syria Denies Using Chlorine Against Civilians"Chlorine gas has never been used by the government," claims Syria’s Deputy Foreign Minister in an interview.
Analysis Confirms Use of Chlorine in SyriaScientific analysis conducted for the Telegraph finds traces of chlorine and ammonia present at the site of three attacks in Syria.
UN Calls for Investigation Into Chlorine AttackUnited Nations Security Council calls for an investigation into reports of alleged chlorine gas use in some Syrian towns.
Video Evidence of New Syrian Chemical Attack?Activists claim Assad regime killed over 100 in chemical attack in Idlib province; videos show victims and alleged chemical bombs.
New Chemical Weapons Attack Reported in SyriaRegime, rebels blame each other after both sides slam chemical weapons attack in Hama province.
Syrian Opposition Accuses Assad of Chemical AttackSyrian opposition activists claim Assad’s forces used chemical weapons in the Jobar neighborhood of Damascus on Thursday.
Libya: Mustard Gas Nearly Reached Syrian RebelsLibyan Islamists caught as they tried to send deadly chemical weapons to Syrian terrorists.
Report: Another Chemical Weapons Attack in Syria?Alleged survivors of January attack turn to US for support; White House dismisses claims, says survivors 'can't get their story straight.'
Libya Completes Destruction of Chemical ArsenalLibya has completely destroyed the chemical arsenal it inherited from ousted leader of Muammar Qaddafi.
Syrian Chemical Weapons Removal ContinuesWatchdog organization overseeing destruction of Syria's chemical weapons announces that operation continues despite airstrike.
Syria Misses Deadline on Most Dangerous ChemicalsFirst milestone in plan to destroy Syria's chemical weapons by mid 2014 missed, as most lethal weapons not shipped Dec. 31.
Syria Says Rebels Attacked Chemical Weapons SitesSyria accuses "terrorists" of recently attacking two sites where chemical arms were stored.