evidence: Ukrainian President Volodymyr Zelensky urged world leaders on Wednesday to remain focused on his country’s war with Russia despite the escalating conflict in the Middle East. [...] Zelensky also said he had received reports that Russian President Vladimir Putin was planning a nuclear attack on power plants in the country and claimed the effects could have far-reaching consequences. [...] Zelensky said Moscow needed to feel the weight of the international community and encouraged the U.N. to "put pressure on the aggressor."