Contrary to Article 44 of the UN Convention of the Law of the Sea, to which the UK and Russia are both party, the UK has engaged in extensive illegal harassment of a Russian naval submarine engaged in fully lawful transit of the Dover Strait.
A Russian naval vessel en route between the Baltic and Black Seas is fully and specifically entitled under the UN Convention on the Law of the Sea Articles 37 and 38 to the right of passage through the strait. This is in addition to the general right of passage through the territorial sea at Article 17. The Russian navy was in full compliance with the provision at Article 20 that, while in territorial waters, the submarine must be on the surface and displaying its flag, and in compliance with Articles 29 to 32 on warships.
Not only does the Russian Navy have every right to sail through the Dover strait on passage, it has been exercising that right – along with many other navies – for over a hundred years. The decision of the British government now to employ military harassment and threat is not only illegal, it is a gross and entirely deliberate act of provocation designed to sour international relations and disturb the atmosphere of world peace.