“We are now living through the most destructive arms race in human history, because this time, it includes artificial intelligence,” he said.
“The 21st Century isn’t much different from the past,” he told delegates, in his fourth address to the General Assembly as wartime leader.
“If a nation wants peace, it still has to work on weapons,” he said, adding, “it’s sick, but that’s the reality,”
He said global institutions had become weak and could not stop war. It was not international law or cooperation, he said, but weapons that “decide who survives”.
Mr Zelensky met the US President Donald Trump yesterday on the sidelines of the United Nations General Assembly.
After that meeting, the US president posted on social media that he believed Ukraine could win all of its territory back, in a major shift in his stance on the war.
Previously, Mr Trump had suggested Ukraine would have to concede land to Russia in a peace deal, telling Mr Zelensky during an angry row in the Oval Office in February that he didn’t “have the cards”.