US
Syrian president dismissed the allegation that his regime perpetrated the attack that left 87 civilians dead
Earlier testing by Turkish authorities had also said the chemical used on April 4 was sarin
Trump last week ordered missile strikes against an air field in Syria
Damascus and Moscow denied Syrian forces were behind the gas attack
Trump's first major foray into a foreign conflict opens up a rift between Moscow and Washington
US President Donald Trump ordered the strike in retaliation for what he said was a "very barbaric attack" on Tuesday
France earlier warned Russia against resorting to its veto power to block the measure from adoption
Muallem speaks at a press conference two days after a suspected chemical attack left 86 people dead
Donald Trump accused Syrian President Bashar al Assad's government of going "beyond a red line"
Trump did not go into detail about what any US response to the atrocity would be