Leaders of the Group of Seven (G7) countries should condemn any threat of using nuclear weapons and promise "decisive action" against such a move when they hold a summit in the city of Hiroshima next week, Ukrainian Ambassador to Japan Serhiy Korsunskyi said in a Reuters comment.
"This should be a very clear statement specifically from the nuclear powers of the G7 that the use of nuclear weapons or nuclear terrorism will not be tolerated and will be met with an almost decisive response from the major powers," he said.
Serhii Korsunskyi also told Reuters that conditions around the Zaporizhzhya NPP were rapidly deteriorating, and the situation, which the head of the IAEA warned at the weekend, had become "potentially dangerous."
Ukrainian President Volodymyr Zelenskyi will participate via video link in the G7 meeting from May 19 to 21 in Hiroshima, which became the first city in the world to undergo an atomic bombing in 1945, adding significance to his country's message.
"The most important thing is that the summit, when we have a real threat of nuclear terrorism, this summit will be in Hiroshima," Korsunsky added.
He called for G7 talks on nuclear security and global architecture, as both the International Atomic Energy Agency (IAEA) and the UN Security Council lack powers.
"Additional decisions may need to be made" regarding the new system, he added.
"We believe that there must be a consensus among the G7 if we want a large international security system to protect any country in the world. We are not talking only about Ukraine," the ambassador said.
Ukraine's other big hope is that the summit will discuss recovery efforts, in which Korsunsky believes Japan can play a key role in light of its experience in disaster recovery, including the use of frozen Russian assets.
In February, the European Union said it had formed a task force to consider using frozen Russian assets to rebuild Ukraine.
Last week, Belgian Prime Minister Alexandre De Croo said his government was studying how Russian assets could be used to help Ukraine.