US ties scientist's Iran return, US hikers' fate
• APThe Obama administration stepped up calls for Iran to release 3 American hikers asking they receive the same treatment as a Iranian scientist allowed to return home from the US. The department also asked about an ex-FBI agent last seen in Iran in 200
And for the other side of why he went (was sent) back:
http://www.csmonitor.com/USA/2010/0715/Iran-nuclear-defector-Three-reasons-he-might-have-gone-back