According to the Frankfurter Allgemeine Zeitung (FAZ), the letter from Tehran is addressed to ships planning to pass through the strait; the authorities are demanding completed application forms and a fee for the passage of the Strait of Hormuz. The FAZ characterizes the current ceasefire between the US and Iran as fragile.
The article also includes a photo from the US Navy (Rafael Peralta) showing an intervention involving a tanker.
Source: www.faz.net
