The attack came as fighting continues between rebels and the regime in the divided city
Swedish chemists say findings can open up 'new opportunities' for curing victims of the gas
Since 2005, an annual Day of Remembrance for all Victims of Chemical Warfare has been held on April 29
Officials previously confirmed the group was manufacturing and using chemical weapons in Syria and Iraq
It would be the first time chemical weapons were used in Iraq since the ousting of Saddam Hussein
The US Director of National Intelligence said Isis allegedly used 'sulphur mustard' in an attack in Syria
The UN says blood sample tests show the use of 'sarin or a sarin-like substance' in Syria attacks reported to it by the regime
Rebels say symptoms of those who died were those of sarin gas, a nerve agent whose use would breach United Nations resolutions
Britain is to destroy 150 tonnes of industrial-grade chemicals as part of the international effort to dismantle President Bashar al-Assad's illegal weapons stockpile.
Chemical weapons were used in Syria, UN weapons inspectors have said, and probably in several locations.
'Remember that trends don't give any indication of sentiment' Twitter warns
No country volunteered to perform the task, and there is money to be made from it, says David Usborne
US president Barack Obama has met the teenage advocate for girls' education and the target of a Taliban assassination attempt who was the youngest nominee for the Nobel Peace Prize.
Little-known watchdog gets Nobel recognition for work trying to rid world of chemical weapons – but critics point to recent genocide in Syria and claim award is ‘premature’
Nobel committee reveals OPCW as official winner one hour after the result was leaked by Norweigan public broadcaster NRK
The chief of the global chemical weapons watchdog has said it is sending a second team of inspectors to Syria to expand its high-stakes, high-risk mission to rid the country of its poison gas stockpile.