24 April 2020 (New York/ USA)
Not confirmed
https://www.un.org/disarmament/events/fourth-conference-of-nuclear-weapon-free-zones-and-mongolia/
24 April 2020 (New York/ USA)
Not confirmed
https://www.un.org/disarmament/events/fourth-conference-of-nuclear-weapon-free-zones-and-mongolia/