4 May 2011 Last updated at 12:50 ET
US woman Sarah Shourd, who was released by Iran after being detained with two fellow US hikers in 2009, has said she will not return there to stand trial.
Ms Shourd was to stand trial next week for espionage alongside her friends, who are still being held in Iran.
She told AP news agency she suffered from post-traumatic stress disorder and returning would be “far too traumatic”.
She and the other hikers have said they unknowingly crossed into the country while hiking in July 2009.
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US woman refuses Iran spy trial