Chemical Weapons

The Russian ambassador in The Hague told ITV News that “Russia never lies” as he set out plan to prove the attack in Douma was staged.

ITV News correspondent Dan Rivers was taken, by regime minders, to the hospital where those who were affected by the attack were treated.

The OPCW has returned from the site of the suspected chemical attack in Douma and should have results in about a week.

The chemical weapon will still be present at contaminated sites, according to a Defra official, as a clean-up operation gets underway.

"The purpose of our actions tonight is to establish a strong deterrent against the production, spread, and use of chemical weapons."

Yulia Skripal, who was poisoned along with her former double agent father Sergei in Salisbury, has been discharged from hospital.

Sergei Skripal and his daughter Yulia were poisoned by rare nerve agent Novichok which was developed by the Soviet Union in 70s and 80s.

Police and civilians are among those feared injured in the attack on Russian ex-spy Sergei Skripal, said the head of Wiltshire police.

These chemical weapons have been used to deadly effect in assassinations and conflicts in the past.