Donald Trump’s plan to charge ships to use the strait would be a marked departure from the US’ previous insistence that passage through the crucial waterway should be free and open for all.

The move comes after the U.S. and Iran exchanged fire for the third weekend in a row, raising the specter of a return to all-out war after a shaky ceasefire took effect in June.

(1st UPDATE) Iran's top joint military command says the US has no role in determining the future of the waterway and would not be allowed to intervene