The forum, attended by leaders and experts, marks the 80th anniversary of Russia's nuclear industry.
It takes place from September 25 to 28 at Rosatom's pavilions at the VDNKh exhibition and amusement park.
Over 100 countries are expected to participate in the event, including:
Belarusian President Alexander Lukashenko
Myanmar Acting President Min Aung Hlaing
Armenian PM Nikol Pashinyan
Ethiopian PM Abiy Ahmed 🇮🇷 Representatives from Iran
Uzbekistan
Egypt
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IAEA chief Rafael Grossi is also attending the forum.