US President Donald Trump has hinted at the possibility of military retaliation for this week's chemical gas attack in Syria.
An unconscious Syrian child is carried at a hospital in Khan Sheikhun, a rebel-held town in the northwestern Syrian Idlib province, following a suspected toxic gas attack on April 4, 2017. Photo: AFP
The attack in the rebel-held north killed more than 80 people.
Post mortem results overnight have confirmed the use of toxic weapons in the attack.
Our correspondent Simon Marks has the latest from Washington
