The mother of a soldier killed in Afghanistan said that she is not convinced that "the reason for the war has been dealt with".
Dr Margaret Evison, whose son Mark died in Afghanistan in 2009, said at the time she accepted Gordon Brown's assertion at the time that "they were fighting Afghanistan so there would be less terrorism in the UK".
However, she would now like "more hard evidence that the number of terrorist threats has diminished".
She told the Today programme's Sarah Montague that she had "a turning point" in thinking about her son's death when she visited Afghanistan.
Dr Evison said she saw the cultural and social pressures as well as "the revenge culture" in Afghanistan and "realised what British Army are up against".
She said that her son "died for his soldiers" but "the larger political picture is more complex"
"A soldier's death should be for a just cause", she said, "and people are doubting whether there is a just cause".
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