Syria chemical attack

In an exclusive video interview with AFP news agency, he said "there was no order to make any attack".

More than 80 people were killed in the rebel-held town of Khan Sheikhoun on 4 April, and hundreds suffered symptoms consistent with a nerve agent.

Witnesses said they saw warplanes attack the town but Russia says a rebel depot of chemical munitions was hit.

Shocking footage showed victims - many of them children - convulsing and foaming at the mouth. Sufferers were taken to hospitals across the border in Turkey.

Russia had agreed to ensure Syria's chemical weapons stockpiles were destroyed - and its failure to do this enabled the attack, he said.

G7 foreign ministers are preparing to meet in Italy later on Monday.

Talks will focus on how to increase pressure on Russia to distance itself from Syria's President Bashar Al-Assad.

On Tuesday, Mr Tillerson will continue from the G7 to Moscow, where he will meet his Russian counterpart, Sergei Lavrov.

Russia is the Syrian government's main ally, and helped facilitate a 2013 agreement to destroy Syria's chemical arsenal.