The USA has put economic sanctions back on Iran. It said there would be "relentless" financial pressure unless Iran changes its "revolutionary course". The sanctions that were lifted in 2015 after the Iranian nuclear deal are now back in place. They target Iran's economy, such as the energy, shipping and shipbuilding, and financial sectors. The U.S. described the new penalties as, "the toughest U.S. sanctions ever imposed on Iran".
Iran's president was defiant in the face of the sanctions and said Iran would break them. He said Mr Trump was, "a throwback to the era of Bush...and a repeat of the same statements as 2003". He said: "The Iranian people have heard these statements hundreds of times, and no longer pay attention." Al Jazeera said the sanctions were a backward step and that Trump had destroyed the goodwill that had been built between Iranians and the rest of the world.