Subject: Re: Swatggering, tin plated...
Hold them at gunpoint, like a common highwayman? How does Iran enforce it's tolls?

I'd guess they do it by first making the blanket statement that any ship that hasn't paid the toll will get bombed/mined/fired-upon/droned. Surely all the ships passing through the strait are radar and radio monitored? Though that would imply that Iran still has that capability, which I'd bet they still do: Trump hasn't bombed them back to the "stone ages" quite yet.

Unless the U.S. does indeed start threatening any transiting ships with attack as well, I see no other way. Oops - other than increased tariffs on the parent country!