On the second day of the G7 summit in Hiroshima, Japanese Prime Minister Kishida Fumio welcomed the leaders of non-G7 nations to the talks.
Kishida and his wife Yuko greeted the heads of observer countries and representatives of international organizations.
They will discuss the food crisis caused in part by Russia's invasion of Ukraine. Energy security is also on the agenda.
In the morning, the G7 leaders held talks aimed at boosting engagement with the emerging and developing nations collectively known as the Global South. They later discussed economic security.
Kishida also held separate meetings with Indian Prime Minister Narendra Modi, Indonesian President Joko Widodo, and Brazilian President Luiz Inacio Lula da Silva.
Ukrainian President Volodymyr Zelenskyy arrived in Hiroshima on Saturday afternoon.
Japan's government says he will join G7 leaders at two sessions on Sunday--one dealing directly with the war in Ukraine, and the other an outreach session on global peace and stability that will include non-G7 leaders.