> They achieved what they were meant to achieve.

That is copium to the highest degree. The sanctions were meant to prevent Iran from building a nuclear bomb, they were about one year away from having one when the sanctions hit, nowadays I read somewhere (maybe the Economist) that they're maybe one month away only from being able to build one. The sanctions failed.

Later edit: Article from November 2021 about the one-month thing: "Iran one month away from achieving nuclear weapon". [1] As recently as January 2020 the West still thought that Iran was "one or two years" from building a bomb [2]

[1] https://www.jpost.com/breaking-news/iran-one-month-away-from...

[2] https://www.france24.com/en/20200110-iran-nuclear-weapons-de...