- Economic Fury Targets Iranian Maritime Extortion U.S. Department of the Treasury (.gov)
- Live updates: Trump reviews possible Iran deal as U.S. imposes new sanctions NBC News
- May 28: US Treasury threatens to sanction Oman if it imposes tolls on vessels in Hormuz The Times of Israel
- US imposes fresh sanctions on Iran’s military oil sales, Treasury says Reuters
- US imposes sanctions on Iranian agency trying to control shipping in the Strait of Hormuz AP News