"While further chemical attacks should be strongly and effectively deterred, the air strikes could escalate the crisis putting civilians, who have already suffered so much, at even greater risk. World leaders must work together to prioritise peace talks over military solutions," Adham said.
The head of Oxfam Syria warned that military campaign could endanger the prospects for internationally backed peace talks and destabilize the region.
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"All parties to the conflict and their international supporters must strictly adhere to international humanitarian law, and members of the international community including the UN Security Council should meet their obligations to ensure this happens," Adham said.
Damascus has rejected the allegations of its involvement in the Douma incident and invited the Organization for the Prohibition of Chemical Weapons (OPCW) to investigate the reported attack.