In this Wednesday, April 7, 2004, file picture, Russian arms control researcher Igor Sutyagin stands behind bars as he listens to the verdict as he is sentenced to 15-years in prison for spying, at a courtroom in Moscow. On Wednesday, July 7, 2010, Anna Stavitskaya, Sutyagin's attorney, said, according to Interfax news agency, that Igor Sutyagin could be swapped in exchange for Russians who were arrested recently in the United States suspected of spying for Russia. (AP Photo, file)

Photo by: STR

In this Wednesday, April 7, 2004, file picture, Russian arms control researcher Igor Sutyagin stands behind bars as he listens to the verdict as he is sentenced to 15-years in prison for spying, at a courtroom in Moscow. On Wednesday, July 7, 2010, Anna Stavitskaya, Sutyagin's attorney, said, according to Interfax news agency, that Igor Sutyagin could be swapped in exchange for Russians who were arrested recently in the United States suspected of spying for Russia. (AP Photo, file)