Move comes after investigation concludes that Syrian regime used chlorine gas on three occasions since 2014.
Syria chemical weapons
Syrian opposition group calls on UN organizations to investigate claims of chemical weapons use.
'We are not giving up on the Syrian people,' says John Kerry, adding that America's strategy includes grounding Syrian and Russian aircraft in specific areas.
France's foreign minister accused Syria, backed by Russia and Iran, of carrying out an 'all-out war' on its people.
Rescue workers' organization posts video of wheezing children using oxygen masks to breathe; 'Unimaginable crimes are occurring in Aleppo,' UN official says.
Moscow, a close ally of Syria that has previously protected the Syrian government from council action, says the report is not enough to impose sanctions on the war-torn country.
France is working for a UN Security Council resolution condemning the Syrian government after report saying troops used chemical weapons.
The results set the stage for a Security Council showdown between the five veto-wielding powers over whether sanctions should be imposed in the wake of the inquiry.
Organization for Prohibition of Chemical Weapons says change in Mideast security landscape brought about by Syrian war may ultimately lead to Israel and Egypt joining chemical weapons convention.
The Syrian American Medical Society reports that such attacks are increasing, with a high of at least 69 attacks last year, and 14,581 people injured in all.