On the 16 April 2019, Ukraine submitted a request to the International Tribunal for the Law of the Sea (ITLOS) for the prescription of provisional measures under UNCLOS, Article 290(5) in a dispute between Ukraine and the Russian Federation concerning the immunity of three Ukrainian naval vessels and the twenty-four servicemen on board.
For more information see Case No. 26 and the press releases of ITLOS, Ukraine MFA and Russia MFA.
De Maribus 