Officials said Wang was freed as part of a prisoner exchange in which the United States released an Iranian biologist who was nearing the end of his sentence. AP US diplomat Edward McMullen greets Xiyue Wang after landing in Zurich, Switzerland. Negotiations between Iran and the United States, which do not have diplomatic relations, were mediated by the Swiss Embassy in Tehran. "Glad that Professor Massoud Soleimani and Mr. Xiyue Wang will be joining their families shortly. AP US special representative for Iran, Brian Hook stands with Xiyue Wang in Zurich, Switzerland on December 7.

Source: Stuff December 07, 2019 17:03 UTC