TOKYO - Artificial intelligence has become a powerful tool for military deterrence, giving countries such as Ukraine an edge against larger adversaries such as Russia, a Japanese defense expert said Thursday, while warning of the risks of relying on the technology.

"While nuclear weapons were considered a deterrent in the 20th century, the deterrence capability of countries with advanced military AI is rapidly increasing," said Chiaki Akimoto, distinguished fellow of the Royal United Services Institute for Defence and Security Studies in London.

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