The USA has re-imposed tough economic sanctions  Iran. The U.S. Secretary  State warned Iran that it would be subject to "relentless" pressure unless it changes its "revolutionary course". The Trump administration reinstated all sanctions that were lifted  2015 as a result  the Iranian nuclear deal. Most  the sanctions target core parts  Iran's economy. The U.S. Treasury described the new penalties as, "the toughest U.S. sanctions ever imposed  Iran". It added they would, "target critical sectors  Iran's economy, such as the energy, shipping and shipbuilding, and financial sectors".  It added: "The USA is engaged  a campaign of maximum financial pressure  the Iranian regime."
Iran's President Hassan Rouhani struck a defiant tone  the face  the renewed sanctions. He told his government: "We will proudly break the sanctions." Rouhani described the administration  President Donald Trump as, "a throwback to the era of Bush junior and a repeat  the same statements as 2003". He said: "The era  such statements has evolved and the Iranian people have heard these statements hundreds  times, and no longer pay attention." The Al Jazeera news agency said the sanctions were a backward step. It wrote: "With one Trump signature, the goodwill that had been built between Iranians and the rest  the world crumbled  a matter of months."