Originally Posted by
A_Van
It is reported here that it was not "close to" but 3 km (well, about 2 NM) inside the border. And did not react to any signals sent.
Definitely, a deliberate provocation. Not a serious one though as the ship herself is not a big threat, but what was it for?
See here for chapter and verse on the ‘right of innocent passage’, even through the territorial waters of a Russian-invaded part of the Ukraine:
Article 17
Right of innocent passage
Subject to this Convention, ships of all States, whether coastal or land-locked, enjoy the right of innocent passage through the territorial sea.