New Delhi, May 11 -- Iran has introduced new regulations requiring ships to obtain transit authorisation and pay tolls to pass through the Strait of Hormuz, according to a shipping journal, as Tehran and Washington remain at odds over efforts to end the war in the Middle East and restore access to the strategic waterway.

The move marks a formal assertion of Iranian control over the narrow chokepoint, through which about one-fifth of the world's oil is normally transported, even as the United States continues to seek a deal to reopen the route to unrestricted shipping.

Iran established a new agency last week to regulate vessel traffic through the Strait of Hormuz and collect transit fees, according to Lloyd's List, a shipping industry pu...