The flight was shot down outside Tehran on January 8, killing all 176 people on board.
Country identifies 36 individuals accused of "murder" and "terrorism” with US president "at the top of the list". Issues arrest warrants.
As currency hits 200,000 threshold, officials reportedly warning exporters to bring their hard currency earnings home.
Encrypted messaging app is hindered in Islamic Republic by official attempts to block it. Co-founder Pavel Durov says he refused to share user data with intelligence services.
If successful, the strategy will simultaneously get up the nose of Washington and help to relieve Iranians of an unexpected domestic supply glut.