Yes, Oman has confirmed that a prisoner swap between Belgium and Iran is underway. The move is part of a wider effort to reduce tension between the two countries. The prisoner swap is aimed at releasing a Belgian citizen who was arrested in Iran in 2018 on charges of espionage, as well as an Iranian national who has been held in Belgium since 2019. The prisoner swap is set to take place on June 4, 2021, in Zurich, Switzerland.