Conservationist Morad Tahbaz among US detainees released and on way to Qatar in first stage of journey to Washington
Five US prisoners detained in Iran, some for nearly a decade, have left the country by plane to Qatar, as part of a controversial prisoner swap involving the unfreezing by the Biden administration of $6bn (£4.8bn) of Iranian oil money.
Tehran and Washington had agreed to swap five prisoners each, including the well-known conservationist Morad Tahbaz, a British-American citizen.
