Trump’s withdrawal from the nuclear deal by executive order included the reimposition of a number of sanctions on August 6th, while the remaining sanctions will return in the coming months. The sanctions to be re-instated today include Iran’s acquisition of gold, precious metals, and U.S. currency, as well as their trade of industrial materials, sale of Iranian rials, sanctions on debt, and on automobiles. The U.S. is also ending their permission for Iran to export goods into the U.S. On November 4th and 5th, the U.S. will return the final elements of their sanctions that will include ports, petroleum and petroleum products, foreign financial institutions conducting transactions with the Central Bank of Iran, insurance, energy, and more. These sanctions, especially those that target other countries doing business with Iran, may cause a number diplomatic conflicts between the U.S. and countries across the globe.
Source: Here are Iran sanctions returning after Trump leaves nuclear deal