www.jdsupra.com/legalnews/end-of-the-road-u-s-sanctions-on-iran-20626/
See also:
www.fincen.gov/news/news-releases/treasury-and-state-announce-new-humanitarian-mechanism-increase-transparency
www.dentons.com/en/insights/alerts/2019/october/31/ofac-unveils-iran-humanitarian-trade
www.trumpandtrade.com/2019/10/treasurys-financial-crimes-enforcement-network-fincen-issues-final-rule-concerning-iran-money-laundering-concerns/
Update:
www.findknowdo.com/news/12/08/2020/ofac-clarifies-scope-iranian-sanctions?utm
www.findknowdo.com/news/08/24/2021/ofac-authorizes-educational-exports-iran?utm
www.findknowdo.com/news/09/30/2021/ofac-issues-iran-related-faq?utm
www.findknowdo.com/news/11/18/2021/ofac-sanctions-iranian-cyber-company-and-associated-persons?utm
www.findknowdo.com/news/07/06/2022/ofac-sanctions-iranian-petroleum-and-petrochemical-trade-network?utm