Photographer Paul Conroy: Diplomacy in Syria has failed
17 March 2012 Last updated at 17:28 GMT
A photographer who was injured during a shell attack on the Syrian town of Homs has criticised the international community's response to the unrest in the country.
Paul Conroy was injured in an attack on a media centre by government forces in which two journalists were killed, including Sunday Times journalist Marie Colvin.
Speaking at a protest rally in London, he told the BBC's Sangita Myska he wanted to see "unilateral action... from anyone who will prevent the deaths of these people."