The US want to stop Tehran being able to fund its nuclear programme and support for its proxies in the Middle East such as Hezbollah, Hamas and the Houthis in Yemen.
As the world’s seventh biggest oil producer, Iran should be a wealthy country, but because the government of Ayatollah Ali Khamenei continues to spend huge sums on weapons, living standards have been falling for years.
Talking Business explores the impact on the lives of regular Iranians and asks what it will take to make the country prosperous once again.