text: In April 2019, the United States threatened to sanction countries continuing to buy oil from Iran after an initial six-month waiver announced in November expired.
  In June 2019, Trump imposed sanctions on Iranian Supreme Leader Khamenei, his office and those closely affiliated with his access to key financial resources.
  On 31 July 2019, the United States placed sanctions on Iran's foreign minister, Mohammad Javad Zarif.
  In August 2018, Total S.A. officially withdrew from the Iranian South Pars gas field because of sanctions pressure from the United States, leaving CNPC to take up their 50.1% stake in the natural gas field, of which it had already 30%. It held this 80.1% share until it withdrew its investment in October 2019 due once again to the U.S. sanctions, according to Oil Minister Bijan Zangeneh and the SHANA news agency.
  On 19 May 2020, the United States sanctions targeted  Shanghai Saint Logistics Limited, a PRC-based company that provides general sales agent services for Mahan Air. The United States claimed that Iran used Mahan Air to carry gold of fuel sales of Venezuela. Also, Iran denied the allegation.
  On 8 June 2020, the United States imposed new sanctions of Iran Shipping Lines (IRISL) and its Shanghai-based subsidiary, E-Sail Shipping Company Ltd (E-Sail).
  The individuals and companies that had been added to United States sanctions list in 2018: