Five U.S. citizens wrongfully imprisoned in Iran for years have been released as part of a prisoner exchange agreement between the U.S. and Iran. The agreement included the transfer of $6 billion in unfrozen Iranian oil assets and the release of five Iranians facing charges in the U.S. The freed Americans are now on a flight from Tehran to Doha, Qatar, and five Iranian nationals held in U.S. custody are also expected to be released. This marks a major diplomatic breakthrough between the two countries and could lead to further progress in the future.