梅原教授、大下講師、国連訓練調査研究所（ユニタール）が核不拡散条約（ＮＰＴ）再検討会議でのサイドイベントに向けて開いた会合、”Preparatory Meeting: Action Plan for 2050 – Agenda for Nuclear Disarmament”で討論に参加（於：ユニタール広島事務所）
Prof. Umehara and Lecturer Oshita participate as discussants in “Preparatory Meeting: Action Plan for 2050 – Agenda for Nuclear Disarmament,” organized by the United Nations Institute for Training and Research (UNITAR) and held at UNITAR Hiroshima office, in preparation for a side event at the April–May Nuclear Non-Proliferation Treaty (NPT) Review Conference.