Ukraine's Volodymyr Zelenskyy, his Moldovan counterpart Maia Sandu and IAEA chief Rafael Grossi took part in a ceremony on Sunday and a conference in Chernobyl to mark the 40th anniversary of the nuclear disaster. (AP Video: Dan Bashkakov) Subscribe: http://smarturl.it/AssociatedPress Read more: https://apnews.com​ This video may be available for archive licensing via https://newsroom.ap.org/home