Denmark controls access to the Baltic Sea. https://www.google.com/maps/place/Baltic+Sea/@55.685476,11.0...

And Estonia and Finland control access to Russia's only ports in the Baltic Sea. https://www.google.com/maps/place/Baltic+Sea/@60.5931556,25....

> "Estonia and Finland control access to Russia's only ports in the Baltic Sea"

Not a true statement, your map notwithstanding.

Denmark has an ironclad, centuries old agreement with the international community called the Copenhagen Convention never to restrict shipping or charge toll. Did you not know this?

> Did you not know this?

I did not. I don't know exactly what to look for, but all I found was a single paragraph on the Sound Dues article on Wikipedia. https://en.wikipedia.org/wiki/Sound_Dues#Copenhagen_Conventi...

Well, Königsberg.

"Just look at the map" and related responses are non-sequiturs. Without a declaration of war, what is the legal mechanism by which Russian ships would be restricted from the Baltic Sea?

...just look at the map?