Maritime Security Centre of Excellence (MARSEC COE) Counter Proliferation of Weapons of Mass Destruction in Maritime Security Operations Virtual Course was successfully held via Learning Management System between the dates of 20 - 22 October 2020, in cooperation with US Naval War College Stockton Centre for International Law (USNWC SCIL), with the aim of enhancing the awareness and gaining knowledge about the countering of the proliferation of WMD in MSO in the context of international legitimate regulations and NATO practices, and a total number of 35 speaker/lecturer/SME/attendees from 11 different countries (Albania, Australia, Azerbaijan, Czechia, India, Japan, Pakistan, Poland, Romania, Turkey, and USA) and from NATO participated in the virtual event.