Syrian rebels use toxic gas in Aleppo
Syrian state media claims rebels fired shells containing toxic gas into government-held parts of Aleppo.
Syrian state media claims rebels fired shells containing toxic gas into government-held parts of Aleppo.
Russia dismisses UN-led investigation showing that Syrian forces carried out three chemical attacks, opposes sanctions.
Syrian gov't uses chemical weapons a third time, Security Council 'to discuss report' only on Thursday.
The United States expects ISIS to use crude chemical weapons against those trying to conquer the city of Mosul.
Sudanese government carried out multiple attacks using chemical weapons on own civilians, according to report by Amnesty International
Pentagon spokesman warns the Islamic State is determined to use chemical arms and likely to try them again in Iraq.
American officials say ISIS fired a shell containing mustard agent that landed at a based used by Amercan and Iraqi troops.
Pentagon says US-led warplanes destroyed ISIS factory used to produce chemical weapons, confirming longstanding suspicions.
A yearlong investigation to determine who is behind deadly chemical attacks in Syria takes center stage at the United Nations this week.
Russian defense ministry says seven people died in an attack by Syrian rebels using weapons loaded with a "poisonous agent".
ISIS is reportedly already moving chemical weapons into Syria and Iraq, causing concerns for Israel.
Did Assad save his deadliest weapon despite an international effort to destroy his arsenal?
Lebanese terrorist group accused of using chemical weapons against rebel areas, particularly in Aleppo and Ghouta.
Head of Organization for the Prohibition of Chemical Weapons warns of evidence jihadists now capable of producing WMDs.
Israeli intelligence agencies in a race against time against ISIS cell located on Syrian side of the border, according to report.
Russia calls for tougher measures against rebel groups in Syria, warning future terror attacks in Europe could involve chemical weapons.
The Syrian American Medical Society reports 1,491 deaths caused by chemical attacks, with 14,581 people injured.
One killed, hundreds injured in ISIS mustard gas attack. Iraq vows to retaliate.
Three-year-old Iraqi girl dies after being wounded in an ISIS chemical attack near Kirkuk.
Captured ISIS operative proves to be a treasure trove of intel, helping US launch first air strikes on the jihadists' chemical weapons.
State Department spokesman: Washington is aware of reports that chemical weapons were used in Syria, but can't confirm them.
In the midst of a partial ceasefire, Syria's electric grid suddenly shut down, cutting off power nationwide. Internet services also cut.
Israeli Defense Minister claims regime forces have carried out several chemical attacks involving chlorine gas since onset of ceasfire.
In unveiling new weapons including chemical suits, medicine for chemical agents, Defense Minister vows to continue 'foiling' US sanctions.
Foreign policy adviser to Bernie Sanders bashes 'Jewish lobby' controlling America, suggests Israel may have gassed Syrians in 2013.
UN team tasked with identifying those responsible for chemical attacks in Syria will begin investigations in early March.
The Islamic terror group produced, used chemical weapons on Iraqi Kurds, reports OPCW, in first known chemical terrorism in 20 years.
CIA director John Brennan warns that ISIS has the capability to make small quantities of chlorine and mustard gas.
Libyan former intelligence official claims terrorist groups got hold of Qaddafi's chemical weapons arsenal and then smuggled it to Syria.
Syria tells global watchdog it is fully cooperating with the destruction of its toxic stockpile, as agreed upon in 2013.
Blood samples show ISIS used chemical weapons in assault against Kurdish forces in Iraq.
The US intelligence community is convinced ISIS has manufactured, or found, mustard gas - and moved on to chemical warfare.
Doctors Without Borders reports treating four patients in Syria who showed symptoms of exposure to chemical agents.
Senior American military official confirms preliminary tests show traces of sulfur mustard on mortars fired by ISIS.
Organization for the Prohibition of Chemical Weapons voices serious concern over reports that ISIS used chemical weapons.
Officials say test results from ISIS attack in Syria confirm mustard agent was used. Similar attack in Iraq still under investigation.
Senior American officials say it is believed ISIS jihadists used mustard agent in an attack on Kurdish forces in Iraq.
Inspectors reveal regime lied to them and hid chemical arsenal, but Western governments refused to press Assad.
Kurds, monitoring group say ISIS fighters fired missiles containing toxic gas at Kurdish forces in Syria last month.
OPCW hails completion of 2-year mission to destroy Syria's sarin and mustard gas stores.
New book alleges top Israeli officials pitched intervention plan on Syria chemical weapons fiasco - and set poor precedent for Iran.
Even Syria's longtime ally says an investigation is warranted into reports of up to 45 attacks in recent months on innocent Syrians.
Defense Minister says the chemical threat from Syria has dropped due to international pressure.
International inspectors have found traces of sarin and VX nerve agent in Syria that had not been declared to the OPCW.
Syria's President admits he invited Hezbollah to fight alongside his regime but denies Iran has sent troops to participate in the civil war.
UN Security Council hears evidence from doctors of chemical attacks; 'attacks come from helicopters - which only Assad has.'
Pair of attacks in Idlib province likely from regime helicopters, rights group insists.
Representative in charge of disarming Syria's chemical weapons steps down, will be replaced by adviser to Ban Ki-Moon.
Indonesian police say gas attack in Jakarta last month was the work of jihadists returning home from Syria.
OPCW: Syrian regime destroying terror tunnels, chemical smuggling routes in long-awaited move as part of international deal.
Chemical weapons investigators conclude "with a high degree of confidence" that chlorine gas was used in Syria last year.
Gas mask production for civilians and IDF soldiers will cease due to reduced chemical weapons threat from Syria.
Israel has a large store of chemical weapons, a top UN official charged Wednesday, calling for an investigation into Israel's cache.
Syria’s deputy foreign minister denies his government used chemical weapons or chlorine, places the blame on the rebels.
Rumored chlorine gas attack in Iraq raises questions - was the group's stronghold in Syria responsible for other attacks?
After capturing Iraq's largest oil refinery and becoming 'world's richest terror group,' ISIS captures Saddam-era chemical facility.
"Chlorine gas has never been used by the government," claims Syria’s Deputy Foreign Minister in an interview.
Scientific analysis conducted for the Telegraph finds traces of chlorine and ammonia present at the site of three attacks in Syria.
United Nations Security Council calls for an investigation into reports of alleged chlorine gas use in some Syrian towns.
Activists claim Assad regime killed over 100 in chemical attack in Idlib province; videos show victims and alleged chemical bombs.