President Donald Trump said any person or country that buys oil or petrochemicals from Iran will be barred from doing any business with the U.S. Trump has implemented a "maximum pressure" campaign against Iran,

President Donald Trump said he would impose secondary sanctions on nations or companies buying Iranian oil, ratcheting up pressure on Tehran as nuclear talks with the US hit a snag.

President Donald Trump is threatening sanctions on anyone who buys Iranian oil. That warning comes after planned talks between the U.S. and Iran over Iran’s rapidly advancing nuclear program were postponed.