The British parliament defeated a measure put forward by prime minister Cameron for military response to the chemical weapons attack in Syria in August 2013. The vote against British intervention was 285 to 272 with members of his own party and Liberals voting against the measure. The case put forward by Cameron was based on humanitarian grounds, and to prevent the use of chemical weapons in the future. Under pressure from politicians from all parties Cameron decided to put this to a vote in parliament following a debate on Aug. 29, 2013. In calling for the vote Cameron said he was deeply mindful of the deep concerns about Britain's intervention in Iraq in 2003.