On 14 April, the US Congressional Research Service published the latest (107-page) report on the use and effect of US sanctions against Iran. As well as examining in detail the history and extent of the US sanctions regime, it also details settlements with financial institutions for sanctions violations, and summarising and comparing US, UN and EU and other sanctions measures.
https://fas.org/sgp/crs/mideast/RS20871.pdf
If you’d like to help to contribute to the cost of the new laptop and desktop I have had to acquire, now that I am 5,000 miles away from my originals – https://www.buymeacoffee.com/KoIvM842y