U.S. President Donald Trumpon Tuesday restored his "maximum pressure" campaign on Iran that includes efforts to drive its oil exports down to zero in order to stop Tehran from obtaining a nuclear weapon.

US President Donald Trump took an executive action Tuesday to restore the so-called "maximum pressure" campaign on Iran aimed at preventing the Islamic Republic from obtaining nuclear weapon. Speaking to reporters in the Oval Office as he was signing the document -- of which the exact content and form the White House has yet to make public -- Trump said he took the action somewhat hesitantly,

U.S. President Donald Trump on Tuesday signed a presidential memorandum reimposing a tough policy on Iran meant to block the country from achieving a nuclear weapon and to limit its oil exports. Speaking at the Oval Office in the White House,

Donald Trump has issued a dire warning to Iran and the whole world is listening. The president of the United States is no stranger to assassination attempts, but this time, the threat is coming from outside his own country.