[Sergey Sayapin LLB, LLM, Dr. iur. is an Assistant Professor in International and Criminal
Law at KIMEP University’s School of
Law, Almaty, Kazakhstan, since 2014, and Director of the LLB in International
Law Programme.] Introduction On 25 November 2018, Russia attacked and seized three Ukrainian navy vessels, which were on their way from Odessa to Mariupol. Russia´s Federal Security Service said Ukrainian warships had entered Russia´s territorial waters without prior notification. Ukraine insisted that this contention was not correct, and that in accordance with Article 2(1) of the 2003 Treaty...