“Iran has informed the U.S. that… there are ‘NO TOLLS, NO INSURANCE COSTS, & NO OTHER CHARGES OF ANY KIND BEING SOUGHT OR RECEIVED BY IRAN ON SHIPS TRAVELING THE STRAIT OF HORMUZ’,” Trump wrote on his Truth Social platform, without specifying whether those assurances would remain in place after the 60-day negotiating period.

Tehran has repeatedly said it plans to charge what it calls maritime service fees for crossing the strait, as opposed to tolls, a plan fiercely opposed by the United States.

Iran and Oman said Tuesday they will study the costs to be charged for services provided in administering the Strait of Hormuz, insisting they hold sovereignty over the waterway.