Foreign Secretary William Hague has tweeted:
Strong common ground in Doha on aid and a political solution, cannot be achieved if Assad thinks he can destroy the democratic opposition
More top news
Russia is holding a briefing at the OPCW with Syrians from Douma, who, they promise, will say they were not victims of a chemical attack.
Ministry of Justice figures reveal assaults and self-harm behind bars climbed again last year to hit record highs.
Kanye West said of the US president: "We are both dragon energy. He is my brother."