www.cliffordchance.com/briefings/2018/05/back_to_the_futuresecondarysanction.html
See also:
Update:
www.fincen.gov/resources/advisories/fincen-advisory-fin-2018-a006
www.hlengage.com/fincen-warns-of-iran-using-virtual-currencies-to-bypass-sanctions
www.ropesgray.com/en/newsroom/alerts/2018/12/A-Review-Of-US-Economic-Sanctions-In-2018
www.findknowdo.com/news/06/17/2021/ofac-issues-general-licenses-respond-covid-19-syria-venezuela-and-iran?utm