President Donald Trump’s recent decision to reinstate a goal from his first presidency to bring Iran’s oil exports to zero has had little impact on crude prices so far.

U.S. President Donald Trump is expected to sign a presidential memorandum on Tuesday to restore his "maximum pressure" campaign on Iran to stop the country getting a nuclear weapon and drive down its oil exports to zero,

President Donald Trump signed a presidential memorandum to impose “maximum pressure” on Iran, a campaign that — during his first term — levied intense sanctions on the country in hopes of bringing it back to the negotiating table for nuclear talks.