Iran will speed up enrichment of uranium after a deadline given to European countries to prevent this ends on Thursday, the spokesman for Iran’s Atomic Energy Organization said on Wednesday, according to the IRIB news agency.

Iranian officials slammed the Trump administration Tuesday for new sanctions targeting the country’s leadership, saying the measures permanently closed the path to diplomacy and that the White House had “become mentally crippled” under the current president.

President Donald Trump on Monday announced new sanctions targeted at Iran’s top leadership and those thought responsible for downing a US drone flying near the country.

An Iranian military official said Monday that Tehran is capable of shooting down more American spy drones as tensions between the two countries continue to simmer, according to a report out of the country.

U.S. military cyber forces launched a strike against Iranian military computer systems on Thursday as President Donald Trump backed away from plans for a more conventional military strike in response to Iran’s downing of a U.S. surveillance drone, U.S. officials said Saturday.