Natan Sharansky to intense political pressure from Ronald Reagan. Sharansky and three low-level Western spies (Czech citizen Jaroslav Javorský and West German citizens Wolf-Georg Frohn and Dietrich Nistroy) were exchanged for Czech spies Karl Koecher and Hana Koecher held in the United States, Soviet spy Yevgeni Zemlyakov, Polish spy Marian Zacharski and East German spy Detlef Scharfenorth (the latter three held in West Germany). The exchange took place on the Glienicke Bridge between East and West Berlin, which had been used before for this purpose. Sharansky immediately immigrated to Israel, adopting the Hebrew name "Natan" and eventually simplifying his surname to Sharansky.
Mudawi Ibrahim Adam Salah Mohamed Abdelrahman. Mudawi was then held for two months without a formal charge, during which time he began a hunger strike in protest. His arrests were widely protested by groups including Human Rights Watch, Front Line Defenders, Amnesty International, and the Irish government. He was eventually released without being brought to trial. By 2006, Mudawi's role had become prominent enough that "New York Times" reporter Nicholas Kristof described him as "one of the leading human rights advocates in Sudan". In 2007, he attended a conference in Prague organized by Natan Sharansky, Václav Havel, and José María Aznar, where he