President Obama has again warned that the use of chemical weapons in Syria would be a “game changer”.
He said the US now had evidence that chemical weapons were used inside of Syria, but those responsible had not yet been identified.
He said the US needed to establish the facts before taking additional action.
He added that the Pentagon has been asked for range of options if it was proved that Bashar Al-Assad had used chemical weapons.
ITV News has spoken to people inside Syria who claim they have suffered the effects of chemical weapon attacks by President Assad's forces.
President Obama and David Cameron reacted today to reports of the Syrian government using chemical weapons on civilians.
Britain and the United States have declared they have found evidence that chemical weapons have been used in Syria's bloody civil war.