Cambodian Democratic Society Party Tags: Political Party.On December 20 2008 nine days before the candidate registration deadline ended the DSP was created by its leader president Thorng Sovannara who says it was a breakaway faction of the Khmer National Party that he changed into a political party. formation date 2008-12-20 formation year 2008-01-01T00:00:00+02:00 Learn more... Loading...