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Indo-Pacific

North Korea's nuclear push is a 'serious concern': U.S. official

Ely Ratner reiterates commitment to denuclearization of peninsula

Ely Ratner, assistant secretary of defense for Indo-Pacific Security Affairs, speaks at the Mount Fuji Dialogue in Tokyo on Oct. 22. (Photo by Kosuke Imamura)

TOKYO -- North Korea's recent escalation of tensions such as missile launches and a potential nuclear test are "serious concerns," a high-ranking U.S. defense official said on Saturday.

Ely Ratner, assistant secretary of defense for Indo-Pacific Security Affairs, reaffirmed Washington's commitment to the complete denuclearization of the Korean Peninsula in a virtual speech at the Mount Fuji Dialogue in Tokyo.

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