27 May 2012 Updated at 06:59 ET
Syria massacre in Houla condemned as outrage grows
Jim Muir in Beirut: "Some opposition groups are saying this could be a turning point"
Syria CrisisDoes al-Qaeda have a foothold in Syria?
Opposition divisions exposed
Syria's squeezed moderates
Who are the Alawites?
Western nations are pressing for a response to the massacre in the Syrian town of Houla, with the US calling for an end to President Bashar al-Assad's "rule by murder".
link-
http://www.bbc.co.uk/news/world-middle-east-18224559